Derp, I found it.
Changes to Blasters and ranged attack Power Sets:
Snipe powers (such as Blazing Bolt and Sniper Blast) will lose the long, interruptable wind-up when the character has at least a 22% To Hit buff.
Ranged attack sets without Snipe powers (Dual Pistols, Ice Blast, Sonic Attack, and Water Blast) will be looked at to ensure they remain competitive after the Snipe change. Dual Pistols, specifically, will have some of its animation times shortened to increase its damage per activation time in addition to other mechanical improvements.
This was a change that was going to be Launched with issue 24.