Does new Acceleration Stack Version support ubuntu, or any roadmap for this?

Hello,

For D5005 Card, only RHEL is supported. Please refer to this link

https://www.intel.com/content/www/us/en/programmable/products/boards_and_kits/dev-kits/altera/intel-fpga-pac-d5005/getting-started.html

There is no current plan for Ubuntu support.