BB and WW are apparently close to the mark. From an impeccable source this morning, 3 by year end, probably looking at 8 total (but 12 mentioned) intended to replace the DHC-8 1/2/300s.
Despite the high level of Bombardier support the DHC-8 is still seen as a mixed fleet (2 x 100 3 x 200 3 x 300) which requires a disproportionately high investment in spares to fleet size.