That post makes me think DX11 version is even further out.....

Specifically because of

"However, this coming summer we plan to release the game in China and after that we have plans for an expansion pack so when we finish those, we will be looking to complete the DirectX milestone. With that in mind, after we successfully launch A Realm Reborn in China and begin work on the expansion pack – I believe that around that time that we may be able to speak more about the DirectX 11 client for Windows."

So china in summer, THEN expansion pack and THEN DX11 :'(