Valve have released patch 7.40b for Dota 2, nerfing a number of heroes

Level 10 Talent Aphotic Shield HP Regen decreased from +10 to +8

Level 15 Talent Battle Hunger Damage Per Second decreased from +12 to +10

Mana Cost decreased from 110/115/120/125 to 110

Damage Amp per stack increased from 6/8/10/12% to 7/9/11/13%

Base Strength increased from 23 to 24

Damage at level 1 increased from 52–59 to 53–60

Radius increased from 375 to 400

Max Speed Increase increased from 25% to 30%

Brewed Up extend duration increased from 1s to 2s

Toggling is no longer disabled by silence

Earth Brewling's Earth Element now also provides 80% Slow Resistance

Level 15 Talent Incapacitating Bite Attack Bonus decreased from +10 to +8

Level 20 Talent Incapacitating Bite Slow/Miss Chance decreased from +25% to +20%

Level 25 Talent Spin Web Move Speed decreased from +14% to +7%

Level 25 Talent BAT Reduction During Insatiable Hunger decreased from 0.25s to 0.2s

Total Duration decreased from 7s to 6s

Level 15 Talent Strength decreased from +12 to +10

Base Strength increased from 17 to 18

Debuff per Clinkz' attack increased from 2% to 3%

Now also applies to skeletons that were created after the cast

Attack Speed Bonus increased from 100/140/180/220 to 120/160/200/240

Bonus Damage increased from 18/32/46/60 to 20/35/50/65

Level 15 Talent +1 Death Pact Charge replaced with -10s Death Pact Charge Restore Time

Base Strength increased from 18 to 19

Slow decreased from 16/18/20/22% to 13/16/19/22%

Level 20 Talent Shallow Grave Cooldown Reduction decreased from 4s to 3s

Spirits increased from 10/17/24 to 10/18/26

Level 20 Talent Spirit Siphon Damage/Heal increased from +25 to +30

Strength gain increased from 3.5 to 3.6

Movement Speed Penalty increased from 25% to 35%

Cooldown increased from 20s to 25s

Level 10 Talent Frost Arrows Mana Cost Reduction decreased from 25% to 18%

Aghanim's Scepter Pull AoE decreased from 1200 to 1000

Aghanim's Scepter Twister Duration decreased by 0.5s

From 3.2/3.4/3.6/3.8/4/4.2/4.4/4.6/4.8/5s to 2.7/2.9/3.1/3.3/3.5/3.7/3.9/4.1/4.3/4.5s

Burn Damage decreased from 20/30/40/50 to 15/25/35/45

Impact Damage rescaled from 15/20/25/30 to 8/16/24/32

Duration decreased from 25s to 18/20/22/24s

Level 25 Talent Blade Dance Lifesteal decreased from +50% to +40%

Base Strength increased from 19 to 20

Katana Base Attack Time worsened from 1.8s to 1.9s

Katana Bonus Agility Base Damage increased from 12% to 16%

Can no longer be disabled by Silence

Can no longer rush towards buildings or trigger on them

Echo Attack Damage decreased from 35/40/45/50% to 30/35/40/45%

Level 20 Talent Attack Speed During Falcon Rush decreased from +60 to +40

Enemy Pull Distance increased from 210/240/270/300 to 235/265/295/325

Bonus Health Regen increased from 4/6/8/10 to 4/7/10/13

Reverberated damage is now only applied if the target is within 2000 range of the caster

Duration is no longer decreased on Largo from his own abilities

Level 20 Talent Catchy Lick Damage increased from +140 to +170

Mana Cost decreased from 100 to 90

Bonus Move Speed increased from 10/14/18/22% to 13/16/19/22%

Aghanim's Scepter duration bonus decreased from +2s to +1.5s

Root Damage per second increased from 60/70/80/90 to 90

Cooldown decreased from 24/22/20/18s to 20/19/18/17s

Roshan is affected as if he were a hero

Spirit Bear's Entangling Claws reworked. Now it levels up with this ability and passively provides empowered attacks at all times

Upgraded with Aghanim's Scepter

Increases radius to 450 and hero stacks on cast to 5, instantly Entangling them. Also removes stack protection from Entangled enemies

Cooldown decreased from 38/32/26/20s to 29/26/23/20s

Level 10 Talent Entangle Root Damage Per Second increased from +15 to +20

Damage decreased from 55/90/125 to 55/85/115

Damage decreased from 60/95/130 to 60/90/120

Level 25 Talent Death Ward Damage decreased from +45 to +40

Skeleton movement speed decreased from 350 to 340

Current HP Damage increased from 2.5/3/3.5/4% to 2.5/3.25/4/4.75%