Editing what? Words? Yes. Photos? Yes. I haven't tried other things, but there's no reason why not. Burning to built in Apple drives isn't working yet but is promised. Burning to external drives has been reported to work by some, and not to work by others. Full USB support is on the roadmap, as is burning to internal drives.
importing video for editing and burning to dvd Joem, I think he/she is referring to video editing software. Obviously usb2 and firewire are not available, so we cannot import DV from a camera or back out to it using P.D. yet. But, if the data files are already on a disk which is accessible using Parallels, video editing is possible.