'Walking Dead' Season 6: What will be Glenn and Morgan's fate?

During the presentation of the 2015 National Association of Broadcasters, Robert Kirkman and Steven Yeun talked about the future of The Walking Dead on AMC with the current president Charlie Collier. And with many predictions about Morgan!

Kirkman said the momentum created between Rick and Morgan at the end of Season 5 will be taken over the next episodes:

Having Rick and Morgan together, finally, again is a huge deal, and it’s definitely going to be a big part of Season 6.
Now it’s a very different Rick and a very different Morgan who are going to have a completely different relationship,” he added. “And it’s the questions of how they’re going to interact, how they’re going to work together — if they’re going to work together — and what comes from those interactions is going to be basically the spine of season six.
Kirkman also commented that Steven Yeun, actor who plays Glenn, will have "a great season." It would be a foreshadowing of death of the character? Yeun commented:

The way that we make the show — the writers and everybody really want to focus on making things poignant and purposeful and meaningful,” Yeun said. “So if it were for Glenn to go, then it’s probably going to be awesome.