With BlizzCon having concluded, and the WCS in its off-season, Blizzard has made a balance update to Heart of the Swarm. Below are the changes to Heart of the Swarm multiplayer:
Protoss
Oracle
Movement speed increased from 3.375 to 4.
Acceleration increased from 2 to 3.
Units that burrow or cloak while under the effects of Revelation will once again be revealed after unburrowing or uncloaking.
Terran
Armory
Vehicle and Ship Weapon upgrades have been combined.
Siege Tank
Siege Mode attack period decreased from 3.0 to 2.8.
Widow Mine
Sentinel Missiles now deal reduced damage to units caught within its splash radius based on their distance from the target:
40 damage within 1.25 radius.
20 damage from 1.25 to 1.5.
10 damage from 1.5 to 1.75.
Zerg
Roach Warren
The Tunneling Claws upgrade now increases burrowed Roach movement speed from 1.41 to 2.
Source:
Battle.net - Heart of the Swarm Balance Update: November 11, 2013