Broodmother got a new hero model and portrait and looks even scarier now with her red eyes and sharp teeth. Another visual improvement has been made for Hand of Midas; it has a a noticeable effect and sound now. You can see those changes in the latest Dota Cinema videos.
Broodmother's new model:
Hand of Midas' new effect:
An interesting mechanical change is that Pseudo Random chances have been enabled for some abilities. To quote the Dota 2 Wiki:
The Pseudo-random distribution […] refers to the statistical mechanics of how certain probability-based items and abilities work. Unlike a true random distribution, where the chance of an effect activating is unaffected by previous attempts to trigger it, hidden iterating counters are used to prevent long lucky or unlucky streaks.
There has also been a few bot and UI improvements, check out the full changelog:
VISUALS
- Updated Broodmother's model
- Added sound and FX for hand of Midas
UI
- Clicking on a hero row in the Heroes Played tab on the profile now shows a match history filtered by that hero.
- Greevil Egg contents are now displayed correctly in the Steam trading UI.
GAMEPLAY
- Pseudo Random chances are now enabled for these abilities: Coup de Grace, Slardar's Bash, Time Lock, Drunken Brawler's Crit, Headshot, Blade Dance, Chaos Knight's Crit, Lycan's Crit and Skeleton King's Crit.
BOTS
- Lich Bot will no longer Dark Ritual an ally's dominated creep (heh).
- Fixed bug that was causing bots to never try to avoid linear projectiles.
- Bots will now try to avoid Illuminate (both during the channel and when the projectile is released).
- Bots will now buy invisibility-detection items for an enemy Weaver.
- Bots who are the targets of Life Drain and Mana Drain will now try to break the channel by outranging it.
- Lich bot will no longer stop to cast Frost Armor when frantically attacking or retreating.
- Bots will no longer pick up a droppable item if it would require them to drop an item.
- For new players, the default coop bot difficulty level is now Easy.
- Bots will now drop muted items that they've picked up in the fountain.
- Updated Broodmother's model
- Added sound and FX for hand of Midas
UI
- Clicking on a hero row in the Heroes Played tab on the profile now shows a match history filtered by that hero.
- Greevil Egg contents are now displayed correctly in the Steam trading UI.
GAMEPLAY
- Pseudo Random chances are now enabled for these abilities: Coup de Grace, Slardar's Bash, Time Lock, Drunken Brawler's Crit, Headshot, Blade Dance, Chaos Knight's Crit, Lycan's Crit and Skeleton King's Crit.
BOTS
- Lich Bot will no longer Dark Ritual an ally's dominated creep (heh).
- Fixed bug that was causing bots to never try to avoid linear projectiles.
- Bots will now try to avoid Illuminate (both during the channel and when the projectile is released).
- Bots will now buy invisibility-detection items for an enemy Weaver.
- Bots who are the targets of Life Drain and Mana Drain will now try to break the channel by outranging it.
- Lich bot will no longer stop to cast Frost Armor when frantically attacking or retreating.
- Bots will no longer pick up a droppable item if it would require them to drop an item.
- For new players, the default coop bot difficulty level is now Easy.
- Bots will now drop muted items that they've picked up in the fountain.
Source: Dev forum post, Dota 2 Wiki
