The D3 Sneak Peek post on the forum has been updated with new events: Vision and Sentry in PVP, and Thick As Thieves in PVE.
The Sentry PVP will be the one right before Yondu’s debut Versus event, Ravenger Clan. According to the placement rewards for Sentry’s event, the 900 progression for Yondu will be his blue cover.
On the story side of things, Yondu, 3* Daken and 2* Magneto will be the required characters in Thick As Thieves, with placement rewards of 4* Gamora, Sentry, and 2* Black Widow — which means those will be the required/featured characters in the story event following Thick As Thieves.
The MPQTips.com Upcoming Events page has been updated accordingly.