A patch is expected around October (before or about the release of FoV / DKS).
That said, playing the US Xbox release I didn't have any frame rate issues, problems with invisible characters (NPCs or the main character) or trouble with teleporter shrines. The missing text with Keara's statues can be found in the forum, or walkthough, etc (annoying, but easily worked around).
I've also fallen through the ground a couple times when Rush Attacking; periodic saves make that easy to recover from, and in one case I could run in the downhill direction, and popped back up above ground.
There was a patch to fix the potential problem in the US release reloading a save that have been overwritten, though it was simple enough to avoid or work around the issue if you knew about it.
