According to CBR, the latest promo from Marvel teases Yelena Belova in upcoming episodes of Hawkeye! Yelena can be found in this appearance in the Thunderbolt comics, and since post credit scenes also hinted that Yelena found out “who killed” Black Widow, it should be most likely that she shows up in the series too at some point.
See the teaser at bottom of this page!
