From the Live Letter XVIII
http://forum.square-enix.com/ffxiv/t...=1#post2609945

Q17: Can you tell us the status on add-ons and DirectX 11?

A17: ...
In regards to DirectX 11, we will be addressing this along with the release of the expansion. We’d like to show off a side-by-side comparison video of DirectX 9 and DirectX 11 at the Fan Festival in Tokyo. Additionally, we’re also preparing a benchmark before launch.

On the Mac front, progress is continuing and we are planning for a late-March/April release.
Thank you so much. Kisses!


On a side note, if you have problems redownloading a 13GB game, you can always head to an Apple store and use their bandwidth. They encourage people using their connection during OS releases!