Ultimate compilations for the Far Cry and Splinter Cell series have been listed on GAME's online shop.
Splinter Cell appears to be a PC exclusive. There's no description on exactly which games this will include, and there is no release date given beyond "TBC-2013." The PC version listed is priced at £29.99 (€36/$48).
It's likely that Ultimate Splinter Cell will consist of the series' two current gen outings, Double Agent and Conviction, since the last gen titles were already bundled together as part of Splinter Cell Trilogy HD.