White also seems to be doing well in several variations of the main line and Gelfand has been dishing out problems to 9...c4 players.

For further details, see either 'Queens Gambit for the attacking player' or the more up to date, Play 1 d4.  They will add flesh to the bones, but essentially Inn2 is right.  White gets a comfortable edge in the main lines and can make Black defend for the draw forever and a day.

Hope this helps.

Regards
 
Paul Hopwood

Speaking as a White player I am always happy to see a Tarrasch. It just means my opponent is going to suffer for hours  . It's one of the surest ways to get out of the opening alive, but not much more than that. Even "harmless" attempts like 1. d4 d5 2. c4 e6 3. Nf3 c5 4. cxd exd 5. Bg5!? are poisonous for Black, not to mention the rubinstein main lines. The theory hasn't moved much, mainly because hardly anyone wants to take the black pieces nowadays (Grischuk's recent game against Gelfand is the last one I remember, and he suffered for hours before resigning).