- Added Magnus!
- Enabled Team creation.
- Made all 6.75b Parity changes
- Added around 150 new items to the store.

UI
- Ability tooltips are now more precise about what kind of units they can target.

GAMEPLAY
- Fixed basic courier movement speed being too low

BOTS
- Lowered the tankiness threshold for doing Roshan.
- Bots now only save for buyback later in games, and now save the proper amount.
- Lich bot will no longer cast Chain Frost on a single target that's about to die or that is able to blink away.
- Skeleton King bot is now better about saving mana for Reincarnate.
- Improved Windrunner bot's Shackleshot usage (she will now take into account unit movement).
- Bots will no longer have any desire to farm while they are temporarily invisible.
- Added support for selling/dropping situational items when necessary (wards, dust, etc).
- Adjusted Skeleton King and Dragon Knight bots' loadouts.
- Bots will now scale their attack desire on non-heroes based on how dangerous they think the unit is.
- Bots will now harass hero-like units (ie. Spirit Bear) when laning.
- Bots will now consider trying to kill hero-like units.

Update 2

- Fixed Freezing Field duration.

- Fixed Power Treads attack speed.
- Fixed blademail tooltip.
- Fixed Shadow Amulet not appearing in the shop while browsing.
- Fixed Overgrowth duration.
- Fixed Unstable Concoction duration.
- Fixed only the tooltip on Summon Wolves HP being updated.
- Fixed Magnus missing recommended items.
- Fixed Devour cooldown.
- Fixed Shadow Fiend's Requiem tooltip.
- Fixed Shadow Fiend Requieming twice as many souls as he should have on death.
- Fixed units to not teleport with Magnus if he is teleported while Skewering them.
- Fixed Skewer having a cast range.
- Fixed Reverse Polarity not moving units instantly.
- Fixed Skewer killing Roshan instantly.
- Fixed Skewer not destroying trees.
- Fixed Sadist double regen.
- Fixed non-animating Magnus portrait.
- Fixed Incapacitating Bite still listing damage bonus values.
- Fixed bot loadouts for Shadow Amulet.

Sources and Links: 

Dota 2 Dev Forums:

(http://dev.dota2.com/showthread.php?t=57085), (http://dev.dota2.com/showthread.php?t=57199)