Yes and no.
Most digital channels are in the UHF range (or is it the VHF, I always get those two mixed up.) Anyway, most digital channels are broadcast in the range that is received with the "Bow Tie" antenna that clips onto your "Rabbit Ears". But overall, you are correct, there is nothing fundimentally different from the traditional antenna that has been bringing broadcast signals into households for many years.
Go to Antennaweb.org to see what digital channels are broadcast in which band for your area, then you will know what you can get in each area.
The silly badging on new antennas that say "digital antenna" or "designed for digital TVs" etc. etc. is just marketing busywork to help reinforce the lies that the Best Buy goones tell you when they say you need a new antenna.