Well, AmigaOnes are not the same as the Teron boards, as further modifications have been done by Eyetech, but originally AmigaOne is based on the same Teron-technology, yes..But it's only the Teron boards that face problems with delivery now. That doesn't necessarily mean it happens to the AmigaOne..
By the way, AmigaOne is actually underway from Taiwan at the moment, soon ready for shipping after successful beta-testing..When speaking of OS4, it may not be ready until April/May, but Fleecy told me in a mail that they don't want to release half-finished products as most competitors do. Amiga wants to ensure high-quality products as best as possible. I can tell you that when OS4 finally gets out, you will have the hottest and the best PPC-OS yet to date, and i am definitely not kidding!!!