This particular announcement serves as the big new info drop for the 20th of the current month- going forward, there’s no telling what Sega might be willing to show or say.
You can check out a special page for the Sonic 2020 project on Sonic’s official website through here.
Nonetheless, 2021 is going to be a big year for Sonic, what with it being the property’s 30th anniversary next year- and Sony will be leading up to it in style.
Presumably, the coming months will see them talking about the upcoming Sonic film quite a bit.