I just read a reason for the delay that's the best I've seen: It's easier to put a new antenna on your roof in spring and summer than it is in February.
Why would you have to put a new antenna on your roof?
If you rely on OTA television, you already have an antenna. If you don't rely on OTA television, you don't need an antenna.
I suppose there are a handful of people who only have VHF or UHF antennas, and now need to add the other. But most cities in the country have had both VHF and UHF analog transmissions, so anyone who was relying on OTA television for analog, would already have a VHF/UHF antenna.