http://us.battle.net/sc2/en/forum/topic/10038734466#1Mech ground and air attack upgrades combined
We've been looking at this for a long time now, and it feels like a solid step in the right direction.
Widow mine splash radius decreased from 1.75 to 1.1
We'd like to push out the Widow Mine a little bit and bump up the Siege Tank so that bio play becomes more interesting. Ultimately, we believe a mix of Widow Mines and Siege Tanks with your bio army will be a lot more fun to watch than just Widow Mines with bio alone.
Siege tank attack period decreased from 3 to 2.7
Bio play may be more interesting with the Widow Mine change and this buff. Not only that, we believe Terran mech armies can be a lot more viable because faster attack speed naturally means Siege Tanks will be better against their hard counters.
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