Manufacturer part number for this is LBAA0QB1SJ-something, 1SJ seems to be kind of shorthand like ABZ was in the SX1276 version.
I do really like the idea of the familiar STM32L072 + SX1262, may have to get a few and whip up a breakout board.
I’m not immediately seeing documentation of the internal connections between radio and MCU but that should be relatively straightforward to reverse engineer: with the PB12-PB15 which the ABZ used for internal SPI missing from the 1SJ package pinout, I very strongly suspect they used those again to talk to the radio.
That does leave the question of RF switch and TCXO control, probably the remaining DIO is connected somewhere so if not wanting to use polling for event completion it would probably take some code to search for it on the MCU.
Not yet seeing the EVK in stock or that would be interesting, too.
One thing that jumps out in the data sheet is that the power consumption does not look good: 15 - 20 mA while receiving, when the SX1262 should be 5-10 mA. There’s a note that says its with test firmware and the MCU is not asleep, but to get those numbers I have to wonder if they’re using the HSI/HSE (maybe they support USB?) and not the MSI clock that would probably make sense for such usage.
I also like how when they shrunk the footprint size vs. the ABZ, they did it by making the contacts smaller at 0.4 mm wide and keeping the spacing between the same or even larger yielding a more balanced 0.4mm land to 0.3 or 0.35 gap (varies by axis); the ABZ’s very imbalanced 0.5mm lands and 0.3 mm gaps tended to cause issues with manual protototyping.