Blood Hunter:  Now reveals stealthed units with Blood Sense…. this is a huge buff, one that will almost certainly be taken advantage of this season.

Chronos: After many complaints from players Chronos has had the so called nerf stick thrown his way. All four of his spells have been nerfed in some way or another.

The Dark Lady: Her turn rate has been allmost trippled ! This means godlike micro, enough said.

Demented Shaman: Stats nerfed quite hard

Legionnaire: Terrify changed to Terrifying Rage allowing Legionnaire to charge towards his enemies and deal instant
damage Terrifying them in the process.  Good buff,  however hope this doesn’t discourage players from buying Portal Key.

Madman: Snare on Stalk removed, it was obvious the previous patch had hit madman  hard with this snare business. Beserk has also been buffed, mana cost effectively halved at all levels. Very nice!

Valkyrie: Turnrate increased to 960! Javelin of light buffed massively ie makes no sound when cast, hit radius decreased, glow removed, reveals 800 units around targets hit by javelin for 3.34 seconds and shows timer on stun.
I will definitely be giving this vixen a test drive sometime soon.

Zephyr: Ultimate nerfed pretty badly, instead of spawning max cyclones instantly, it now spawns one every second for the duration of the spell.