Now we won't hear anything for at least 5 more months. Those 2 screenshots was basically Rockstar's way of telling us to piss off.
It's cool though. They're just building up hype. Plus it must take an eternity to design these giant open world games.
And by the way, Rockstar pretty much confirmed that there will be another Red Dead game. Quote from Rockstar:
Awesome, we love Red Dead too Ė and are thrilled that so many of you loved John Marstonís tale and are excited for more epic Western action. As we mentioned in our last set of Asked & Answereds to similar questions about the future of other game franchises like Bully and L.A. Noire, we donít always rush to make sequels but that does not mean that we wonít get to them eventually. Stay tuned for further announcements about the future of the Red Dead series.