Big Sur Ryzen and RX6900XT

Hi at all

I succesfully installed bigsur 11.2 with OpenCore 6.8 and the lastest Kext. My configuration is:

CPU 5950x

GPU RX6900XT

RAM 32GB

SSD SATA

I try to update to the lastest official patch 11.3, but after 3 restart BigSur not go to the desktop but stop earlier without big error (only error from the power on rx6900xt) but go forward.

I read that on the 11.3 update, the rx6xxx card not boot even in vesa mode, but on the 11.4 Beta1 the support for this card is inserted.

I subscribe to the apple beta program but from the 11.2 I didn't find the beta update

Now my question:

• Is the 11.4 Beta 1 release to public?
• Is it possible to do the update from the 11.2 to 11.4 beta1 directly without before update to 11.3 ?
• There is a method to boot with my configuration on the 11.3 ?