Some time has already passed, but I don’t see the version with shielding in any shop. Does anybody know more?
Banana Pi has not confirmed a new BE14 with shielding!
We don’t even know the exact name of the new BE14.
What we have is a picture and confirmation of a new BE14:
However, there is no shielding installed!
Apart from the casing, the R3 and R4 had no shielding too.
Perhaps people at this point should just wait for WiFi 8. 
MediaTek has demonstrated WiFi 8 in early 2026, and provided pre-production samples to key clients. Mass shipment will start in 2nd half of 2026.
WiFi 8 is a refinement of WiFi 7 and brings more stability and efficiency.