One thing I can't figure out is the package. I really hope it is not some weird proprietary nonsense. There seem to be 24 pins, but presence of pins 7/GrP2, 8/GrP1 and 9/GrP0 makes me suspicious.
Although device picture seemingly shows QFN-24 and the dimensions are shown as 3x3 mm, which matches QFN-24-0.4mm.
Also, in the part selector (where you can only select one part for now), it says that it is an OTP device. I assume it is possible to load SRAM configuration many times though the interface and only embedded memory is OTP, but still sounds like a limitation. Looking at other devices, there will probably be an MTP version.