1. R80.20 on public cloud (like Azure) will be released on the new linux kernel (because we want one image and the gw in some cases of modern cpu in cloud needs the new linux). Though for management, its working, we want to simplify and have one version for all instance type in public cloud
2. The r80.20 with new linux kernel for public cloud is in early availability so you are welcome to join the EA and get it. The GA of this variant is expected in November
3. If you do not want EA, wait till around the end of the month, for the r80.10 jumbo... installing that jumbo on r80.10 will enable you to manage r80.20 gw’s going forward (we had to wait for the r80.20 gw ga to complete the r80.10 jumbo to manage r80.20)
I hope this helps understand the alternatives