Can we download vBSEO 3.5 now?

Just wondering.

vB4 is at RC4 and gold planned in the next week. It's running largely bug free on the operation of my forum I'm about to launch and I'm ready to get started with vBSEO.

Are we able to download vBSEO 3.5 or a vB4 compatible version after we purchase, or do we have to wait for it to go gold as well?

You are able to download 3.5, yes

vBSEO 3.5 beta1 is released. it does contain known bugs. It is in the downloads area if you are a customer.

beta2 should be released early next week which will be much more stable.