According to third party Macintosh developers Rixsoft are claiming that as of OSX 10.7 “No software will be able to run on Mac OS X 10.7 without being approved and signed by Apple, Inc.”
I’d never heard of Rixstep before, but the buzz on Twitter is that they are not to be trusted. Meanwhile, another developer is circulating an e-mail from Steve Jobs claiming the rumor is untrue, but I have no reason to trust that this is a real e-mail either.
I’ve been worried that this was the direction Apple was headed, but it doesn’t seem like they’re going there yet.