A few days ago word got out that Blizzard was looking to adjust the balance of StarCraft II to weaken the popular Four Warpgate Rush. Tonight Blizzard released the notes for their 1.3.3 patch which is on the Public Test Realm.
The changes include:
Archons are now a massive unit.
Pylon power radius has been decreased from 7.5 to 6.5.
Research Warp Gate time increased from 140 to 180.
Sentry train time decreased from 42 to 37.
Stalker train time decreased from 42 to 37.
Zealot train time decreased from 38 to 33.
Warp Gate unit train times remain unchanged.
Cost changed from 150/150 to 200/100.
Salvage resource return reduced from 100% to 75%.
Root time decreased from 12 to 6.
Fixed a bug where Ghosts could not quickly EMP the same location.
Fixed a bug where players were still able to stack flying units on top of each other.
Obviously, the biggest change that will affect popular play is that units coming out of a Warpgate take more time to train than units from standard Gateways. While this will have the desired affect of weaker Four Gate rushes, there will likely be a shift to proxy Gateways in its place.
It is important to note that these changes are just on the PTR. Also, this does not mean that any of these changes will be rolled out in the next patch. The PTR serves as a testing ground for Blizzard to see how the community will adjust if these changes were made.