At the moment, I think it's "Much ado about nothing", as the Bard once wrote.
According to the Malacanang press releases, as quoted on GMA news, the initial registration will be only for those on the DSWD welfare lists. Indigenous peoples, squatters, low income earners, etc.
The start date of the registration of other classes will be notified later. Note, the govt. stated registration, not the issuing of the cards.
Chill guys, it may never happen in our lifetimes.

Stay safe.
Peter