According to IGN, members of NeoGAF found listings for standard and premium versions of the HD trilogy. They're both priced at $39.99, but the standard version seems to be listed only for the PS3 while the premium version is listed only for the Xbox 360. Both versions are identical except that the premium version comes with an exclusive artbook. There is currently no PC version being offered.
Amazon gives the trilogy a January 29, 2013 street date, though this release has yet to be confirmed by Square Enix. We'll update you more about this bundle as more news surfaces.