slong :
this subject is is neither right or wrong... nobody really knows how fast dx11 will be in use for games.. i dont really care about gettin dx11 if there are no titles i care for coming out within the next year... diablo 3 starcraft 2 and such will be what im looking for and from what iv heard dx10 will be their graphics... with dx11 just coming out im highly doubting there will be alot of good titles coming out that use dx11 to its best... with dx10 being out for longer but still being new i think most games are still going to be bases on that but games that are going into development this year and prolly from here on out will be based on dx11 but like they states above most games take 3-4 years so that leaves plenty of time to upgrade gpu when dx11 really hits the scene and take over the gaming graphics
I don't think that it would take 3-4 years to use DX 11 library codes or to switch from DX 10 to DX 11 because DX 11 library are very similar to DX 10 library since DX 11 is a superset of DX 10. DX 11 is what DX 10 should have been. The game devs and the consoles were to be blame more. Since there are many console players who are stuck with DX 9.0c, the game devs would not fully optimize DX 10 because they fear that the console players are not going to buy their games and that their games would not be compatible with DX 9. After 3-4 years from now there might already be DirectX 12 cards and Playstation 4 and XBox 720 as well as Nintendo Wii 2 so if you are planning to upgrade to DX 11 after 3-4 years then just forget it. Your prediction of when most DX 11 games will be available kinda exaggerate...
Here are the possible upcoming DX 11 titled Games that could come in Q4 2009 (Obviously, there could be many of them):
BattleForge
Battlefield: Bad Company 2
Dirt 2
F1 2010
GRID 2
Crytek Announces CryEngine 3 supporting DX 11
Crysis 2 (possibly in early 2010)
Max Payne 3 (in Winter Q4 2009)
Hitman 5: Ressurection (announced working title)
Project Offset/Meteor by Intel (definitely support DX 11 and allows real-time ray tracing (with Intel Larrabee))
Stalker: Call of Pripyat (announced working title)
Bioshock 2 (release in October 29 but could be delayed due to DX 11)
Dead Space 2 (could possibly be DX 11 title)
Assassin's Creed II
PS: It would be a shame if game devs fail to adopt DX 11 for Diablo 3 and Starcraft 3. Why wouldn't you think that even these games could potentially be DX 11 titles by next year since there are already many announced DX 11 titled games for Q4 2009?
Anyway, I am assure that many people don't wanna miss these amazing DX 11 games by Q4 2009...