I'm quite sad since Oracle bought Sun (who ain't?).. and many ppl pre-assumed that Oracle will shutdown some Sun stuff..
So... they removed OpenSSO from the download site, but being an opensource project it can't be killed.
The reason for the shutdown is that Oracle has its own Identity Managment software and probably it's better than OpenSSO.
Anyway ForgeRock "forked" OpenSSO under OpenAM name, so it doesn't get lost.
Oracle Identity Manager
PS: It seems that Oracle is not really community oriented.. I think that instead of killing OpenSSO it would have been better if they *give* OpenSSO to the community.
We'll see what will happen next..