Friends of mine overseas swapped emails with Warren 3 years ago or so and he admitted he was very much of the opinion that he wouldn't want to do the band thing again and that he felt that time had now gone. Given his age and how physical his job in the band was, I can't say I blame him.
If it had ever been going to happen, it would have been touring Vienna for it's anniversary. But that's Midge's solo band doing that with him.
It's over and done. Listen to the records, the live recordings, and enjoy them.