Dolores announced just recently to a crowd in Spain during a gig that album #5 will be ready for spring. The question here is whether the actual recording will be finished or if the album will be available. The former is probable. One may recall that “Bury the Hatchet” was finished in September 1998, but not released until April the following year.
Source: Cranberries Usenet Group (alt.music.cranberries)