We're very, very close to zarro boogs on the Firefox 1.0 blocker list. If all goes well this evening, we might have our first candidate build tomorrow. If that happens, we'll need a few days to test out over the weekend and could have the Firefox 1.0 release candidate shipping early next week.
We expect these upcoming RC builds to be complete and if we don't find anything new and scary, they'll become the Firefox 1.0 builds.
With 1.0 close at hand, these candidate builds are not intended for general Preview Release users. If you're interested in helping us test these near-final bits, then we're glad to have it but we certainly don't expect PR users to migrate to the RC builds with 1.0 just around the corner.