Wow, talk about your informative subtitles. To comics fans, those three words reveal a lot.
It feels a bit odd, though, because in Captain America: The First Avenger
, the subtitle was a description of Cap himself. So this makes it sound (to the uninitiated) like Cap is the Winter Soldier. Might work better if '40s-style title conventions were still in use; then they could call it something like Captain America and the Winter Soldier
or Captain America Meets the Winter Soldier
I'd personally be quite happy to see Amanda Righetti return in the role - she already played Sharon Carter in the post-credits scene in Captain America.
If you mean the scene where Steve woke up in the fake hotel room and was greeted by a SHIELD "nurse," that was actually before the credits. The post-credits "scene" was a trailer for The Avengers