Fro mthe Devloeprs forum, they are usign the base engine of luminous to rework FFXIV. However all key aspects of the engine are not fully ready to convert current game data over to utilize Direct x 11. The core is made for it, but a lot has be be reworked. THe core can also use opengl, which is what will be the PS3 version, but some aspects of Direct x will be missing from the console port. As the engine is further modified so will FFXIV

It going to take time. THere will be big changes in 2.0 and bigger changes over time.