Via the Steam Community:

GENESIS COLLECTION

• The Genesis Collection is now available, featuring 17 finishes from community contributors.
• Access items in the Genesis Collection via the Genesis Uplink Terminal, available as a weekly drop.

MAP SCRIPTING

• Added cs_script, a JavaScript based scripting system for Counter-Strike maps.
• Added script_zoo.vmap to demonstrate cs_script usage and functionality.

UI

• Added ability to inspect another player's loadout when spectating.
• Added zoom (mousewheel) and pan (shift+drag) to all inspect panels.

SOUND

• Each grenade now has unique higher-fidelity sounds for draw, inspect, pin-pull, and throw.

MISC

• Various improvements to subtick shooting consistency.

Rumor has it:

• Size is close to 3 GB – data capped users should take action now