Hi, G.
We're working on the Universal version. It'll be released when we've completed testing: I don't have an exact date... it's a "ready when it's done" kind of thing!
As indicated in the SD! System Requirements on the main page, SD! does not work in Rosetta (which is the same as emulation).
And -- SD! could always create a bootable USB volume, the system just couldn't boot from it. The new Intels can, and thus it'll "just work" when the time comes. Always nice when that happens.
