As filburt said already, it wasn't our descision.
vb dev's have asked us and as we want to support them, we don't allow vb3 hacking until RC.
Of course hacking itself is allowed, but not releasing it on vb.org now.
Regarding vb.org: we've just hacked in what's absolutely needed on vb.org, nothing more.
All "special" hacks will appear with RC, as it's also easier for us, regarding upgrades et al.
but as already said, we just try to help vb3 devs, so talk to them if you're not content with the actual situation