According to Digital Music News (article here) Amazon are readying an music download offering that will integrate with the existing store (rather than an independent entity like iTunes etc). The really exciting part is that the downloads will be in MP3 – no DRM! According to the article the will happen regardless of whether or not the majors want to participate.
This of course is all good news for the indie labels who have been selling DRM free content, so shouldn’t have too much trouble striking agreements with Amazon. This can only apply further pressure to the majors to drop the DRM position. At the same time eMusic aren’t going to be happy as it is likely to eclipse their presence on the web for selling DRM free content.