We are looking into this functionality. We are not yet sure when we can deliver to be honest but it is on our radar. The problem with Public folders is that they should have died some time ago (at least Microsoft would have wanted that
) and that the technology behind it differs from mailbox and the way you need to back it up.. But we are investigating and I hope that I can bring positive news soon. But for now, it is still not known.
For the release date. I am hoping to deliver the beta (as said at VeeamON) before end of this month