Having missed a March and June release, the PS3 trilogy of Splinter Cell HD has again slipped from August to September 27th. A number of retailers are reporting the new date as being the day the pack will be released. These retailers include, but are not limited to Amazon, GameStop, and GameFly.
However, as is always the case, it could be that the retailers are merely speculating as no "official" word has been announced yet for the pack.