I second this request. I use Linux about 75% of the time (Windows and other operating systems the rest of the time). Sibelius is an excellent piece of software, and it would be really nice to have a Linux version.I assume too, that now that there is a Mac OS X version of Sibelius, porting to Linux wouldn't be too difficult. This would also put Sibelius at the forefront of music software for Linux as the first (and only) major commercial notation software available to users of that platform.
Just something to consider.
Cheers!
Jeremy