The Pan European Game Information Board, or PEGI for short which is the equivalent to the ESRB in the Sates for Europe has rated Legaia 2 for the PlayStation 4. Most likely joining among other announced PS2 titles for the PS2-on-PS4 titles.
Legaia 2, being a sequel to the first title released back on PS1, was originally released on the PS2 in October of 2001 for the West. The first game never made it on the PlayStation Network, so hopefully with this move they eventually do so.