Vista SP2 due next April, says report - Calendar Of Updates（情報元のブックマーク数）

あくまでうわさですが、Vista SP2が２００９年４月にリリースとのこと。

Microsoft will deliver Windows Vista Service Pack 2 (SP2) to manufacturing in April 2009, two months after it issues a final test version to users, according to a Web site that accurately predicted several Windows ship dates in 2008.

www.calendarofupdates.com