you have to compile it yourself, no package yet. Some people who have been working on Mozilla are working on it.
SSL enabled sites seems to crash it.
form submissions (including entering Google terms) seem to barf it, too.
This is really preliminary, but it's good news for getting a modern Netscape browser on OpenBSD. While some people said this was known previously (Mozilla working if you build it statically), when I tried it previously (with 1.0 and 0.99) I had failures. Hopefully a package will move along more quickly now!
Make sure you read the whole thread, there are a lot of notes you'll need to be aware of. But we are a lot closer!