There are some issues booting earlier versions of Retropie on new versions of the Raspberry Pi4 manufactured in 2022… not that you would be able to get one anywhere. If you do manage to get a new Pi somehow, Retropie 4.8 will address this issue for you.
Tearing and jitter on a Pi4 is still horrible and I would strongly suggest everyone avoid the Pi4 for emulation for the time being.
That said, the images are now available on the PJ images page right here. Please report any issues.