Mike Perkins and Sean Izaakse are pitching in on the weekly Avengers "No Surrender" story-arc currently ongoing.
Perkins will be drawing part of February 21's Avengers #681 alongside originally-solicited artist Kim Jacinto.
Izaakse will be taking the full reins of February 28's Avengers #682 from Jacinto.
Jacinto remains solicited for April's Avengers #688.
No reason has been given for these changes.