Maybe a RC means something to the many software developers that use the forum. But for the rest of us it doesn't mean much. We are only used to the typical beta versions that you release. But we are not aware of the internal process you have before they really get released.
Anyway, what I get from your message is that we still are weeks away from a beta.
Thanks for the update.
A RC - Release Candidate - is a bit beyond beta. It's the step software takes between beta and production. Typically, it's a code complete version of the product that's gone for rigorous internal testing. It is not uncommon for software to go through multiple release candidate versions - but as the name implies, it's so close to ready that they have a version they're considering releasing.
It means the project is feature / code complete. The developers are happy with it. The product manager is happy with it. It's just being vetted.
Does that help?