The upgrade:

Picture taken from this Teamliquid post

Patch delayed 1 week in SEA:
Link to this post in Blizzard's forums

APM is now what we had in Broodwar which counts how often the user is doing stuff with his interface. It reflects the speed of the player's hands and its capabilities.
EPM is counting what APM was during the last few patches. It's filtering out what it sees as spam commands. So it doesn't count changing unit selections as it tries to display reflect how useful the player was.



Apparently there is a StarCraft Master achievement now.
The achievement is refering to a custom map which hasn't been published, yet. That map however seems to have at least 30 waves of micro scenarios.
The achievement has now an own portrait.
An old alpha version is accessible in the campaign map list as Tsimulator. You need to add all dependencies and then test document to play the map.
The level with the High Templars shows that the map is very old and had the old super strong psi storm in mind.

Post has been edited 5 time(s), last time on Feb 22 2012, 4:57 pm by Ahli.

from what I've heard, pheonixes with this upgrade make mutalisks unusable

Not sure why they went with +2 range instead of just +1. Also they should have mirrored the icon vertically so it didn't look as visually similar as the existing interceptor catapult upgrade, in fact it almost looks like the artist used that icon as the base for the new one.