Unfortuantly I doubt I'm going to wait. Trillian is growing on me and it's option to auto-reconnect when dropped is a fantastic step forward from what Plus offers in UI improvements. It also logs chats, which is what I'm missing from Plus. I'd have never gone looking for another IM interface had support for the released version of WM not been delayed by work on a beta version of MSN IM that's not due out for some time. I would recommend in the future you work on RTM product support before you work on vaporware support lest you lose customers to move advanced UIs like Trillian.
Well Terabyte, as I said in my previous message, the reason why no version was released since November is that I was working on new features in Plus! and not because I was working on Messenger 7.
As Menthix suggested, if you like Trillian so much, just use it.