Hi there!

Thanks for your query.

Each template has it's own documentation stating the technical requirements and PHP configuration you need to keep. I am sharing the documentation link to the Latest Helix Ultimate framework/template:

https://www.joomshaper.com/documentation/helix-framework/helix-ultimate-2/introduction#technical-requirements

And yes, here is our plan for Joomla 4:

https://www.joomshaper.com/blog/joomshaper-s-plans-for-joomla-4

In this ongoing process we have upgraded a number of templates already. Here is a list of one of them:

https://www.joomshaper.com/blog/11-joomla-templates-updated-with-joomla-4

Best Regards