Ubisoft has announced in their UPDATE ON THIRD FISCAL QUARTER PERFORMANCE AND ANNUAL TARGETS that Spinter Cell: Conviction has been pushed back to April of this year while R.U.S.E. will now released sometime in the fourth quarter of 2010-11.

From the Update:
‘- The postponed release dates for Tom Clancy’s Splinter Cell Conviction™ and R.U.S.E™, which were previously scheduled for the fourth quarter of 2009-10, and will now be released in 2010-11. Splinter Cell Conviction™ is now expected to hit the stores in April 2010.’