It seems odd that there's nothing from Microsoft about this. If there is, I can't find it; there are only references to RCs and Betas.
Neowin, yesterday:
"Update: Neowin has been contacted by a Microsoft spokesperson. who stated Service Pack 1 has not been released to OEMs.
''Microsoft has not released SP1 to OEMs at this time, though we are on track for a Q1 release, as we previously announced,'' she said.
Update 2: As noted by multiple Neowin commenters, a final or near-final version of Service Pack 1 has been made available via Wzor. The leak, which matches the build string of the alleged final build (7601.17514.win7sp1_rtm.101119-1850), weighs in at 638MB for the x64 ''Wave0'' version and 349MB for the x86 ''Wave0'' version. ''Wave0'' releases contain only English, French, German, Japanese, Spanish language files. ''Wave1'' releases containing around 30 additional languages have also been leaked by Wzor.
Microsoft blogger Paul Thurrott
reports that the build floating around the internet is '
'near-final'', but Service Pack 1 is ''not quite done''. Neowin has requested comment from Microsoft about the leaked builds. "