First of all, I stay quite conservative at the first day of the Bundesliga season; but will be always willing to re-act more passionately in live-betting if own estimations before the season get verified by the first 10 or 20 minutes.

First short impressions - line-ups from kicker.de:

Bayern - Wolfsburg: Wolfsburg will improve compared to last season; McClaren much better manager than Veh and Köstner, better individual players; Bayern not at their best yet and without Robben. This all makes a 1.66 or 1.75 to a not-value, doesn't it? No bet for me. Both play a 4-2-3-1. I think Cicero (contrary to kicker.de) will play in any case, the Brasilian, formerly for Fluminense and Berlin, is in good form, will play for Hasebe or Misimovic'. Dzeko alone can hurt van Buyten and Badstuber in one-on-ones very much, Contento a lacklustre player as well. McCLaren disappointed me as manager when he was at Middlesbro after having been Ferguson's trainer at ManU and of course, England's manager - his teams looked tactically naive...playing old kick and rush, no short pass, no balance - even though Boro made it to a European cup final with him. But he spent much money there for good players. I was really surprised how he managed to give Twente such a tactical good game plan and a 4-3-3, maybe luck? But at Wolfsburg, he really looks changed compared to the old England years.. 4-2-3-1..short passes he wants to play... I do not really believe in a big surprise this evening, but I wouldn't take the home win against them.
Bayern ----> Butt - Lahm, van Buyten, Badstuber, Contento - van Bommel, Schweinsteiger - T. Müller, Kroos, Ribery - Klose. Trainer: van Gaal
Wolfsburg ----> Benaglio - Riether, Kjaer, A. Friedrich, M. Schäfer - Hasebe, Josué - Grafite, Misimovic, Mandzukic - Dzeko Trainer: McClaren

Hoffenheim - Bremen: I circumscribed Bremen's play a little bit in the CL topic (Bremen vs. Sampdoria), they are back to a 4-1-2-1-2 diamond formation which gives them much dominance and ball possession without having the best full-backs to give them width and fast central defenders to give them a force against fast counter-attacks - Frings isn't there a help either. Hoffenheim without Obasi, but in much better shape than last year so far though they still look for re-inforcements in the offense, Bremen played a fantastic match on Wednesday, but could rotate or look exhausted. No bet for me.
Hoffenheim ---> Starke - Beck, Vorsah, Simunic, Compper - Weis, Luiz Gustavo, Salihovic - Mlapa, Ibisevic, Ba
Trainer: Rangnick
Bremen ----> Wiese - Fritz, Mertesacker, Prödl, Pasanen - Bargfrede, Frings - Hunt, Borowski - Pizarro, Hugo Almeida

Mönchengladbach - Nuremberg Here I wrote a few words about Gladbach in Cup threat : they do play counter-tactics and strong set-pieces, so the value is always there w h e n Gladbach plays as an outsider or w h e n the opponent is very weak like Aue was. Nuremberg was weak last year, still they dominated the match in Gladbach and it was a tragedy to lose it there with 1:2. Gladbach had a few missings, unsure nominations in the offense - Nuremberg again very weak, maybe even weaker than last year, because they replaced Choupo-Moting upfront with Schieber - and this is the first step into relegation. I do not see him score more than 5 goals in the season - and they rely on him in 4-2-3-1. Gladbach may win with the talent in Reus in a single situation or Arango...or set-piece, but except for live bets no value for me so far. Still, Nuremberg look very poor this season, even weaker than last year.
Gladbach ---> Heimeroth - Levels, Brouwers, Dante, Daems - Bradley, Marx - Reus, Arango - Matmour, Idrissou
Trainer: Frontzeck
Nuremberg ---> R. Schäfer - Judt, Wolf, Nilsson, Pinola - Simons, Gündogan - Eigler, Ekici, Bunjaku - Schieber

Köln - Kaiserslautern:Köln changed to diamond 4-1-2-1-2, short-passes... will try the ball possession game... still look for the missing link: good versatile full-backs, but young Salger shows good talent on the left, Andrezinho will step in on the right after a few weeks, now the average player Brecko. They did not show much up front so far in the pre-season; Kaiserslautern weak as well, nearly losing the cup-match in Osnabrück, equalizing in minute 93 - destroying my value bet, by the way (3,50 price...) with this late goal. Once again, only live bet an option to me - two teams which might get into deep trouble this season, even though I appreciate Köln's attempt to play more constructive football and to give youngsters like Salger and Yalcin (play-maker, peak of the diamond) a chance. No bet so far.
Köln ---> Mondragon - Brecko, Mohamad, McKenna, Salger - Petit - Lanig, Jajalo - Yalcin - Novakovic, Podolski
Trainer: Soldo
Kaiserslautern ----> Sippel - Dick, Amedick, Rodnei, Bugera - Kirch, Bilek, Tiffert, Ilicevic - Lakic, Micanski

Freiburg - St. Pauli: Here I could play Freiburg 1 / HC- 1 (2,25) (3,90) respectively, Bwin.de - but with minor stakes like 3/10 and 1/10. Early in the season, Freiburg at home always constructive, offensive pressing against a minor team like promoted St. Pauli. Cissé is questionable to play, if he misses, it would be a big loss - he is not only a useful scorer - he keeps the ball with his brilliant technique in order to let the midfielders and full-backs come from behind. St. Pauli already in trouble, they have some talents, a good spirit, but lack good 1st-league-players and will have problems in away matches anyway. They won't like the Freiburg pressing.
Freiburg ---> Pouplin - Mujdza, Barth, Butscher, Bastians - Schuster - Caligiuri, Makiadi, Rosenthal, Jäger - Cissé
Trainer: Dutt
St. Pauli ---> M. Hain - Rothenbach, Morena, Zambrano, Oczipka - Boll, M. Lehmann - Bruns, Hennings, Naki - Ebbers
Trainer: Stanislawski

Hannover - Frankfurt: Hannover just transferred very fit Abdellouae from Valerenga in- he was in the midth of his season, maybe he is a glimmer of hope for a weak Hannover side...but on the other side he follows the Ramadan rules, doesn't he? Hannover have skillful players, good on the ball in the midfield with Pinto, Carlitos, Stindl, talented Stoppelkamp - but without Abdellouae a bitter offense with Hanke or Forssell - only Ya Konan is agile and dangerous, often has to play on the wing though. The worst problem for Hannover: Slomka is such a bad manager (psychologically and tactically... he is just a media face ...and ok, he hired much training staff in Hannover - maybe they can solve the problems, but I doubt) and already heavily contested in Hannover after only..10 to 12 matches? They lost deservedly to Elversberg in the cup, from Germany's 4th division south. I never like Frankfurt very much - they're over-rated in my eyes - but under these circumstances in Hannover you should watch out to take Hannover DNB (3/10) - I still look .. there are teams I almost never bet on like Frankfurt - on the other hand I broke this rule already in the cup in Wilhelmshaven when Frankfurt won as well, to my pleasure.
Hannover ----> Fromlowitz - Cherundolo, Haggui, Pogatetz, C. Schulz - Schmiedebach, Pinto - Carlitos, Ya Konan, Rausch - Abdellaoue Trainer: Slomka
Frankfurt ----> Nikolov - Jung, Franz, Russ, Tzavellas - P. Ochs, Meier, Schwegler, Köhler - Halil Altintop, Amanatidis

Hamburg - Schalke - Both teams with problems in the preparation phase; but I expect Schalke (I guess, without Raúl - to be replaced by Jendrisek - or Magath again surprises with a young talent like Quotschalla) to have the bigger problems. Metzelder should be out as well, maybe replaced by Matip or Papadopoulos. In any way, Schalke looked modest against third division side Aalen in the cup match though they had 11 against 10 for nearly an hour or so. Van Nistelrooy is in good shape, able to score against a weakened side like Schalke whose manager Magath still looks for 2 inforcemetns in the offense, Raúl still needs training, should be out of the team; Metzelder is still slow and not versatile, already injured like all the years before. Escudero looked weak as a left-back, so already Schmitz gets back into the team. They look totally without balance so far. I take Hamburg (2,35) with 4/10. They just have to keep Farfan under control..he's already in fantastic form.
Hamburg ---> Rost - Demel, Westermann, Mathijsen, Jansen - Jarolim, Zé Roberto - Pitroipa, Petric, Elia - van Nistelrooy
Trainer: Veh
Schalke ---->Neuer - Uchida, Höwedes, Metzelder, Schmitz - Jones, Rakitic - Farfan, Hao - Raul, Edu