I ran this last night, more or less as a precursor an epic version, since I knew it had changed slightly since the last time I ran it.
There are more chests, 3 total IIRC, but nothing terribly interesting.
And the end rewards were an absolute joke - I was getting choices like +2 falchion, +3 dagger, etc. For an 18th level quest?!? I thought this quest was supposed to have improved. Boy, was I wrong!
The good news is, the final wave isn't such a massive nightmare anymore. It's much more manageable now. But the loot definitely did not match my expectations.