Early prediction--both will be here next season.
Realizing his market value has diminished based on past performance, age, and coming off of a significant knee injury, Dockett will take a pay cut and stay on for at least one more season. While he's going to be limited physically, we're starting to see how important he is on this team from a leadership standpoint.
As for D-Wash, none of the ILBs have demonstrated that he can be expendable. The pressure in the A-gap without a safety has been non-existent, and we're using a safety, not another ILB, to fill his role (Bucannon). Provided Washington has been productive during his suspension (i.e. staying in shape, successful completion of a rehabilitation program, no failed tests), I have no reason to believe he won't be here.