This looks a LOT better than the first one. Helen Mirren is guaranteed to be a better Bruce Willis foe than whoever's in Die Hard 5.
As for Red 3, yes, Garrick Hagon a.k.a. Biggs (other credits of his include appearances in The Spy Who Loved Me, Doctor Who old and new, and Tim Burton's Batman) is in this movie, in the (presumably) all-important role of "USA VIP" (or not). He'll join other cast additions David Thewlis, Byung-hun Lee, Neal McDonough, Anthony Hopkins and Catherine Zeta-Jones.
Still - Dean Parisot, director of Galaxy Quest. Whose only feature film between then and now was Fun with Dick and Jane. I'm looking forward to his return.
Red 2 opens...well, see above.