Well, if it can make some of you happy, I did see some Messenger 8 related stuff myself while I was at Microsoft headquarter's this summer and what I saw is
not in the "leaked list"
.
Just remember that if there was such a good source of information from Microsoft, this guy/girl would probably get fired pretty soon for giving that kind of info publicly. I would suggest you don't get your hopes up for any rumour you hear about Messenger
.