I should hope so!

THE SOPRANOS Will Take a Shorter Break This Time
According to creator David Chase, THE SOPRANOS will take a shorter break between seasons after the fourth one concludes than it did between the third and the fourth (16 months). Chase says that his writing staff is already working on the fifth (and possibly final) season. Filming on new episodes will then begin in March and the season will begin in the early fall of next year. Chase said he expects all remaining characters to be back next year as well – providing no one else gets whacked this season.