"Two different groups leave Alexandria on supply runs. With both are concerned with the future of the community, immediate danger will derail them."
It also purposefully avoided a happy ending to remind us that we’re going to miserable forever if we continue to watch this show.
http://www.tvguide.com/news/the-walking-dead-another-character-dies-but-what-was-the-point/
The April 3 finale will be 90 minutes as opposed to the usual 60, according to Entertainment Weekly.
http://www.tvguide.com/news/the-walking-dead-is-getting-a-supersized-season-6-finale/