Via the Steam Community:

DEAD HAND COLLECTION

• The Dead Hand Collection is now available, featuring 17 finishes from community contributors, and including 22 all-new gloves as rare special items.
• Access items in the Dead Hand Collection via the Dead Hand Terminal, available as a weekly drop.

MAPS

Dust II

• Fixed a pixel gap in a door Outside Long.

Alpine

• Updated to the latest version from the Community Workshop (Update Notes)

Rumor has it:

• Not necessarily connected to this update but in case you haven't yet seen it, Valve put up a public response to New York State's lawsuit filed against it over Weapon Case/Sticker Capsules (and TF2's Mann Co. Supply Crates/Cosmetic Case and Dota 2's Treasure counterparts) in a Steam Support article

  • If you have a NY State billing address associated with your Steam account, you may have also seen a copy of this statement emailed to you earlier this afternoon

• Size is just over 2 GB (with Workshop Tools installed)