The image below shows the new BPI-R4.

The following are the main updates.Hardware changes:
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ESD protection measures have been added to the serial port.
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Additional card slot packages (similar to the R3mini’s) and eSIM packages have been added to the SIM card slot.
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A NOR package has been reserved under the SD card slot (this function is reserved as there is no related image yet).
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The DIP switch components have been replaced.
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The circuitry for the SFP and M.2 BKEY has been optimized.
I think it will be available to you soon. Please contact BPI if you are interested in purchasing it.