Stuff about the wizard I noticed:
While arcane recovery does indeed have a spell level limit.
I've noticed they've actually boosted the damage on many arcane spells, Meteor Swarm actually does 20d6 bludgeoning + 20d6 fire damage now!
Permanency and that 20th level evoker ability from the playtest has been replaced with spell mastery and signature spell.
Fighter:
The champion fighter is really hard to kill at 18th level and gets a half prof bonus to all non-prof con, dex, and str checks.
Cleric:
Divine strike seems to have been moved to a domain ability, instead of something common for all clerics.
Rogue:
Sneak attack is now back to the 3e progression.
Rogues get blindsense, which actually does allow a rogue the ability to sneak attack someone in the dark. It was an issue brought up about the Rogue before.