I suggest you read the Mozilla post. Basically, the output *will* be free, with open-source software under the Apache 2.0 license, and the patents being licensed according to W3C rules. So it doesn't get any more free than that. As for DRM, it's not a property of the codec. There certainly won't be any in the codec itself, but people can put DRM on top of anything they want (including ASCII art).