We don't have one that's specific for Virtuemart on J1.7. We generally try not to support betas, or even release candidates, of other extensions as it causes too many problems and has reflected baldly on us in the past, even with issues that are not caused by JFBConnect. When a final release of Virtuemart for J1.7 is released, we'll definitely do our testing to support it shortly thereafter. It's also possible that if you install the J1.5 VM profile plugin it may work on J1.7, but we won't make any confidence statements on that.
Hope that answers your question, and we're excited for the new VM release as well, though we haven't tested it.
Alex
Virtuemart and J 1.7
