Not together, but, in very mysterious individual circumstances which will be explained in the Rick and Michonne TV show.
However, there was no guarantee AMC could get those two actors back— so, as a cover, the filmmakers shot a different ending that didn’t make sense with the crowd-pleasing Rick and Michonne ending (which was apparently shot a few months ago).
After Daryl rode off, we cut forward to the Freedom Parkway, outside Atlanta — where the iconic shot of Rick rode down from the pilot.This is Rick Grimes.” (Which, of course, is his name — and the line Rick said in the pilot.) Then we end with the voice of a survivor answering back: “...Hello?”.