The latest Civil War II teaser image by Phil Noto introduces Old Man Logan into Marvel's summer 2016 event series (via Wall Street Journal). Although nothing is shown in the image denoting whose side he has chosen, the inclusion of a broken "X" logo in the background is significant. This elderly Logan is currently appearing in Extraordinary X-Men.
Coincidently, the "Old Man Logan" character was created by the same creators who did Marvel's original Civil War, Mark Millar and Steve McNiven.
Check out the rest of the already released Civil War II posters here, and look for the Civil War II kick off story in stores on Free Comic Book Day May 7.