The BBC is set to release their iPlayer in the coming weeks, and their service will be compatible only on Windows. Now complaints by the Open Source Consortium, the BBC have now agreed to address the concerns.
The iPlayer will allow UK residents with a TV License to download TV shows for up to a week after they air. Then they would have 30 days to watch the show. The BBC has noted that it wanted to produce the iPlayer in multiple systems, but noted that a very few DRM systems are cross platform (it would use DRM to delete the file).
According to Ars Technica, plans for a Mac version are underway, and should be available sometime in the fall; and as well, the BBC will consider releasing a Linux version of the iPlayer too.