Castle Wolfenstein 3D is already running! It had been shown in Bad Bramstedt at the Amiga Meeting, and I've tried it on my very own Pegasos II (under MorphOS 2.6). The G5 version had also been showen, it is booting, but far from ready. Do not expect it too soon, for sure not with 2.7 and very unlickely with 2.8. The powerbook G4 version is far more developed, but not finished yet. I don't expect it for 2.7, as the MorphOS team prefers to publish perfect (or at least good working) software. The chance is good that we will see it with 2.8. (My guess, of course.)
I don't expect 2.7 with "father christmas", but with "Santa Claus" (in Germany at December 6th).