I would guess some time next year. But I don’t know for sure.
While PHP 8 is formally released, it always takes while for popular CMS to be updated to support the latest PHP version, and then for every installation of those CMS to be updated to the versions which work with PHP 8. Upgrading to the latest PHP version immediately after release is a great way to break a good portion of the websites we host, which is of course something we don’t want to happen.
There was a Website Development category before, but it was merged into Hosting Support. The reason is that for too many topics, it wasn’t clear which category doesn’t work.
If you have, say, a Laravel site and it doesn’t work, is this an issue with the code or a problem with getting the code to work on InfinityFree? If your site doesn’t work and you don’t understand why, it’s hard to make the right call even if you want to choose the right category.
Most of the topics in Website Development, there were very few generic programming questions in there.
This question also did not belong there. Website Development was for things not specifically related to InfinityFree. “When will InfinityFree have PHP 8” is very specifically related to InfinityFree.
And if you want to have a discussion like “how to make your website ready for PHP 8” or “what do you think of the changes in PHP 8”, you can do that in the Informal category.
Speaking of informal discussions, please keep the “hey how long have you been here, what does Regular mean” stuff out of here. Questions about InfinityFree features is a support question. Talking about what the forum was like before is great chit-chat for a topic in the Informal category.