First off, no one knows what DCI may be doing "behind the scenes".
That being said, right now there really isn't a whole lot DCI can do for 2021.
There way too many unknowns.
1.What corps will survive and be able to compete in 2021 ?
2.For those corps that do survive, what will be the "touring model" ?
3.What rules will corps that do survive have to follow for things like hygiene, Social Distancing, including on busses etc. ?
4.Will any school house a corps, or, for that matter, even allow them to use outdoor facilities for practice ?
5.What venues will even be available for shows ?
For those that are, how many fans will be allowed ?
WGI cancelling just threw another monkey wrench into 2021.
I think we're months away from any indication from DCI of what may happen in 2021.
Plus, if 2020 is any indication, any plans are subject to change in a heartbeat.