Mac OS X 10.7 Lion: the extensive Ars Technica review (by John Siracusa)
Excellent and in-depth review of the brand new 10.7 Lion OSX version, by John Siracusa (whose OSX reviews are by now legendary).
Since I’ve bought a brand new Apple MacBook Pro after June 6th, I’m entitled to a free Lion Upgrade. Neat 😉
By the way, for you programmers out there, Apple just released XCode 4.1 as a free download for anyone running Lion (not available for Snow Leopard, though).
UPDATE: some not so well known, but quite interesting, Lion features can be found here.