It might (is that a USB only model? not recommended) but jlivingood
has already said people should be getting themselves/shopping for D3 modems RIGHT NOW, as older ones will no longer provide full speeds (except maybe the economy tier) VERY SOON.
Once it reachs that point it is CC's interest to go all D3 and remove/bar lesser modems from the network for management and plant efficientcy reasons.
So you could MAYBE get full speed today, but might need to upgrade or rent within the next year or so OR accept lower speeds then you pay for at your own expense.