I've gotten a few questions from folks about CodePlex and GotDotNet - does the former replace the latter? Why have both?

Jim talks about it on his blog. Short answer, they're both around because that's the right thing to do right now. CodePlex is in beta and moving from one to another isn't a trivial thing (especially while the dust settles).

Update: Korby posts more detail around tooling on his blog.