IMHO, this is pure economics...Even if they fix COD , they will have to give for free the patches, the hotfixes and all the new features promised in the initial release....We did buy un unfinnished product...
But by putting all their efforts on a new game rather than the planned Add-On( whatever theater) based on what was done on COD, and sell it as a new sim, they will be able to get some new fresh money. New release at Xmas 2012 makes sense then....
Then, after, maybe, they will retrofit some of the new features in COD.
Its the only sensitive way to go....

Salute !