From the latest update of Duramax 2p8L E98 DSP4 Userguide it shows some conflicting info.

listed OS's are all in the 5 series like the 2016-2018 trucks have but notes for "latest OS for up to 2019" does not include the OS of my truck 24000143.

I remember reading in the past DSP4 would be added for the 2019 and newer trucks but as per that userguide now it wont?

im confused on the whole support of DSP4 at this point. will 2019 E98's get it? does it have support now that i just cant seem to find the tab for? running the latest beta2 software...