Feige remained characteristically coy when pressed to give more information but his comments do suggest that he at the very least expects Howard to turn up again.
Where exactly this may be is unknown, but with the MCU expanding into more and more cosmic arenas the studio isn’t short of options.
Indeed, the MCU cameos are much more in-line with this version.
Of course, it’s unlikely Howard’s presence will ever go beyond a simple wink and a nod.