5.0 released again a few weeks ago and (hopefully) won't be reverted again. As such, you can expect to see a 5.0 category coming sometime in the near future, but only after critical bugs are ironed out. I'll wait another few weeks for an additional patch, and if it seems good after that, I'll add the category. For now, you can downgrade to the latest patch of 4.4 to speedrun.