Final Fantasy X/X-2 HD Remaster is coming on March 18th in North America and on March 21st in Europe, Square Enix has announced. Take into account that these dates correspond to the PlayStation 3 version of the game, since the release date for the PlayStation Vita will be revealed at a later date.
The HD remasters for Final Fantasy X and X-2 were supposed to come out in late 2013 in both North America and Europe, but it seems like the only place where the release date will maintain is in Japan, since the compilation is still coming out this December.
Final Fantasy X/X-2 HD Remaster will be available in a regular and special limited edition. The latter will feature a copy of the game, an exclusive 48-page art book and commentary from the original development teams.
Source: PlayStation Blog