In May 2012, Blizzard updated the game in each region instead of using a patch. Blizzard will no longer use the PTR system to test balance changes, instead using the Antiga Shipyard map for testing purposes instead. Protoss * Observer build time decreased from 40 to 30 seconds Observer build time decreased to 30, down from 40. Zerg * Overlord movement speed increased from 0.4687 to 0.586 * Queen anti-ground weapon attack range increased from 3 to 5