I'm not the only one who has noticed this trend. Craig Wiseman also picked up on it, and wrote a very good and slightly tongue-in-cheek analysis of why we should call the post-8 version of Domino, Websphere Lite.
... We have problems. Seems like IBM would like to have a single message for developers, sales folks, and customers. Domino is an excellent product that has a history of evolving, and there are lots of open source/easily available tools. IBM's long term app server seems way too big and complicated to fit small customers.
So how do we solve it? We get two versions of Websphere, Websphere Lite and Websphere Gargantua.
It gets better from there. Unlike me Craig doesn't see doom and gloom in Domino's future. It'll be interesting to see which vision, if either, is closest to reality. I'll go pop some popcorn and watch the spectacle, you go read Craig's blog. :-)