Most of the newly-leaked specs seem very similar to the non-5G version, except for the SoC that is now supposed to be a Snapdragon 865 Plus. The leaker also seems to be confusing the selfie cam with one of the rear sensors, so the accuracy of this leak is a bit dubious.
https://www.notebookcheck.net/More-Samsung-Galaxy-Z-Flip-5G-specs-get-leaked.477450.0.html