when was the 8.01 patched relesed and does it contain the players who are signing in the january window

8.01 was released on November 22nd 2007.
So obviously it doesn't contain January transfers.
No player/team updates.
Just bug fixing and tweaking.

no the 8.01 patch is the 1st patch brought out to clear up the bugs there will be a 2nd patch coming out but we dont know when that will have january transfers in it

No it doens't contain those players, as it was released last year

Wait for the data update late February