No free lunch

New Mac apps bearing the Universal symbol will run on both Intel and PowerPC Macs. This includes Mac OS X, iLife ’06, Safari and Mail. Other apps will run on Intel-based Macs with the aid of Rosetta.
Pro Mac Apps-Final Cut Pro, DVD Studio Pro, Motion, Soundtrack Pro, Aperture, and Logic-won't run on Intel-based Macs. Owners of those apps will have the option of upgrading to a Universal version of the app for a fee, and those are expected to be available by March 21, 2006. Full details here.
An extra $49. Seems like Apple should just allow existing users to download an update, but they've got the users hostage on this one.