Can anyone tell me if the android 10 beta has dynamic system update or dsu loader in developer settings?
Yes, there is a system app named Dynamic system update. Couldn't find it in developer mode settings tough.
Sorry, I got confused with android 10 and android 11. That is how it is supposed to be.(I thought dsu loader would be in android 10)
Use of dsu
You can Install a gsi of android 11 using the dynamic system update without erasing the stock build ,but you need to use abd if you are in android 10. Dsu loader in android 11 makes it as easy as installing a software update,you just need to go to developer settings->dsu loader , select the Gsi you want to download and install, after it is installed choose reboot.
What's the use of this app?
The post above your question has the answer and also here is a article from XDA developer's about dynamic system update