The Perfection610 issue is looking better by the hour, I'm planning on releasing something that does scan correct colors and an almost correct scan area by the end of the weekend.
I just sent out a note to everybody with whom I communicated regarding the Perfection 610 in the past. I made a test version of the backend available to these people. Let's see if it good enough for these testers.
Marti made LCMS v1.06 available yesterday. The Linux support comes as usual from your's truly. This new version now has automake/autoconf support. So it's getting pretty easy to use color management in your own projects... I'm still waiting for people who want to add ICC Profile support to their software. The LCMS library is available at http://www.lcms.coloraid.de.