I think some of the Q and A's from NYCC mentioned that certain figures (He-Man and Skeletor were ones mentioned) could be re-released later on again, but there would be differences so that the first versions would still be unique (whether it is packaging, paint differences, or something else). It did sound fairly likely that the "big two" would at least see the light of day again. I'd have to look back over them again, so I'm not sure if it is confirmed or not.
I think this line continues to look great from what we're seeing. The price still stings - very much so - but they're still pulling me in. I didn't get the King Grayskull exclusive from last year (which I'm ok with), but I've bought the others so far, and hope to continue to - at least as long as they are memorable/recognizable to me from my youth. What we've seen so far seem to fit that bill.
