Source: Worthplaying
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Finnish magazine Magaza Pelaaja has the first details, on Ubisoft's Splinter Cell: Conviction. Unlike most other titles in the franchise, Conviction will mostly play out during the day, and this time Sam Fisher teams up with Third Echelon to help Anna Grimsdottir, Sam's former intelligence gathering operative, who is in trouble. When Sam Fischer is being fed bogus intel and supplied with wrong equipment, he turns on his former employer, realizing the threat comes from within Third Echelon. Currently only scheduled on Xbox 360 for later this year.
A on the PC. Never even got into it due to so many of those bugs. 
Very sad situation after enjoying the first three so much.
