Will the Bengals actually be good?

I remember someone said that we'll find out in the offseason if the Bengals' improvement will continue. Usually they let their players go away as free agents. So far they've re-signed Rudi Johnson and TJ Houshmandzadeh, who had a very good season last year. The Bengals are signing players and the Browns look like they have a good coach and a good GM. Who knows, maybe the Steelers will actually have some competition next season.