No. When there's an Intel build ready for a test I'll post a message here to invite beta testing. For what it's worth, making an Intel version of Yummy isn't just a case of enabling a checkbox in Xcode... there's a lot more work involved. If Apple had stuck to their promised schedule of delivery for Intel Macs then I would have been ready, but as you know, they're six months ahead of schedule.
In any case, I'd already planned to release a new version of Yummy with new functionality and a few bug fixes in the near term. After that I will be concentrating on the Intel build.
As far as Rosetta is concerned, I'm interested to hear where you think there is a problem with Yummy FTP. From the feedback I've had from the two Yummy FTP users with Intel Macs (so far) there don't appear to be any problems, although a very slight transfer speed degradation on high speed networks was noted.
-Jason