Will Cloud Gaming ever be free and outside of the GAMEPASS subscription?

I'm sorry Fortnite is a grand exception and it is very unlikely that any other game will ever be added as an open free cloud title in the foreseeable future.

free to play games already or exempted from the requirement for a game pass subscription if you have Xbox hardware

Supporting cloud gaming is extremely expensive, which is why a subscription is required

if you purchase an Xbox, you'll have many free to play titles available to you as well as games to purchase

The games could be linked to another account. The trials could have run out. Forza 4 has never been free outside of a trial. Unless you used it via GamePass which then expired that would explain why you're having issues now. All 3 of those games are on
GamePass. Which leads me to believe you just don't have an active subscription anymore.

No, Fortnite is free on the cloud

https://support.xbox.com/en-US/help/games-apps/cloud-gaming/free-to-play-games

No other games are free on the cloud and require an Xbox game pass ultimate subscription

What new features will there be in early august 2021 about cloud gaming will it be without gamepass ultimate subscription like xbox series x in the cloud on old gen consoles

At this time only GamePass titles are available”able via the cloud, and you must have an Uktimate subscription to use Cloud