Check out the new and game changing update in TF2.

Demo Bombs can be blown up by shotguns, etc. YES!!

Engineers can Upgrade teleporters
They are kinda fast...

Dispensers also upgradeable.
OMGWTF this is really fast metal production!

Spies can use ammo packs to regain cloak.
AMAZZZING!

Spies have less ammo.
MM more balanced.

Medics can see health meters when players call for medic. PRETTY COOL.

Achievement tracker.
SWEET.

Summary: so far a little-tested update. Engis are very, very powerful in raids of more than 3. Demos have less control over a point just by laying stickies on it. But it solved my whiny spy problem.

Score: 8/10

PS. Now stand on a hostile dispenser while cloaked as spy. they usually dont notice but u recharge cloak!