The decision is more in depth than that.
Firstly, DAB is still the mainstay for digital broadcasting.
Secondly, IBOC, or DRM (whichever the Department of Industry determines to be technically acceptable (could be one, or the other, or both) could be implemented, but interference issues and coverage areas need to be evaluated.
Thirdly, with respect to DAB (DRB as the CRTC calls it), has been given a bit of a shot in the arm...
1) More freedom as to what to broadcast, and not just digitizing AM and FM Stations. This means more format flexibility.
2) More flexibility in determining coverage with the balancing of main transmitting sites vs. use of relays
3) They're still capped at 5 stations per ensemble, but this can be upped providing quality isn't impaired by improved compression techniques, such as AAC+ (to name one being tested elsewhere in the world).
4) Licensing is for 7 year periods, but if the current licenses are not acted upon by the dates specified and broadcasting commenced (for those not on-air yet), they loose their license for DAB broadcasting.
The full decision can be found here: http://www.crtc.gc.ca
An excellent rundown of todays decision can also be found at the Worldwide Ensembles Web site.