Phil Taylor: This has come up multiple times, including in the comments of the SP2 post, so I want to cover why there is a time delay from when Acceleration will be available and until the download for SP2 will be available.
Yes, there is a reason for the delay, even if bits for SP2 are done.
Just because Acceleration English RTM'ed and the bits are frozen does not mean they are ready to release. Since Acceleration and SP2 are separate products; that means completely separate efforts are required for setup, test, and international release efforts.
Microsoft, Service Pack, SP2, FSX, FSX SP2, DX10, DirectX 10