I think the plan is to keep transmitting analog signals for quite a long time, but to force manufacturers to include digital tuners in new TVs so that the transition to digital signals (both cable and air) can start to happen.

You can always point your antenna north to Canada, anyways

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8