So among all this Mac update fever, I noticed that the class tips have received a major overhaul. For example:
Engineers can help other Engineers build stuff.
M2 rotates building blueprints.
It's better to use an Ubercharge early or to save yourself than to die with a full charge.
Ditto for the Buff Banner.
Reload your gun as a Spy to make your disguise reload as well.
Using Bonk to distract a Sentry.
Drawing Sentry fire as an Ubered Medic to make it easier for your patient to move in and destroy it.
Compression blast extinguishes teammates.
Heal Soldiers and Demomen when the map starts so they have extra health to rocket jump with.
The Dead Ringer is obvious when used too soon to be plausible.
Spies can take enemy Teleporters.
Engineers should avoid standing on their exits because of this.
The bottle's damage is the same whether it's broken or not. (I lol'd at this one.)
Friendly disguises.
Drop Sandvich with M2.
The Dead Ringer's cloak does not flicker.
And other weapon stats and esoteric bits of information that most of us no doubt know already but are nonetheless obscured to new players. Personally, I think it's a fantastic change.