More importantly some "details" have been released about DPi 2.0 from MP.
https://racer.com/2019/08/02/2022-im...tent=home-hero
Most important bits are:
With the recent completion of the DPi 2.0 feasibility study, the next phase of the process involves wind tunnel testing that will run through the third quarter of 2019. Compared to the current models, the new DPis will feature more styling freedom, giving manufacturers greater latitude to incorporate road-car design cues into the custom bodywork. The wind tunnel and computational fluid dynamic testing is designed to benchmark the range of areas where the new freedoms will be allowed, and how they might impact performance
And:
Although it is currently undefined, IMSA intends to welcome alternative fuels in DPi 2.0, but it’s unclear how far the door will be opened beyond the use of gasoline/ethanol blends.
Once the aero and KERS solutions are in place, teams and manufacturers will get their first look at the final regulations in the first quarter of 2020. Initial track testing for the DPi 2.0s is expected to take place in the first quarter of 2021.