I'm a bit late on spreading the news, so here's a little blog roundup:
Allah at HotAir
David Codrea at War on Guns
Uncle at SayUncle
David Hardy at Arms and the Law
Eugene Volokh, David Kopel, and Orin Kerr at Volokh Conspiracy
A typical, but always good Instapundit post here
Sebastian at Snowflakes in Hell
And the blog everybody's linking to, SCOTUSblog, which seems to often be the first to break the news on this case.
As for me, unfortunately, I'm busy. I'll add my two cents later.