So, testing for a few months now... and now they come with "It is extremely complex and must be perfect"?
Seems like they found fundamental, exploitable flaws in their idea.
Well I said it all along they wouldn't be ready end of Feb , at least they are clever and caring enough not to release a update with flaws. When they drop SegSig from development there is a good chance they will go with PoW2 and SegWit for a July release.