They have already announced a newer series based on single/dual 1.5GHz Cortex-A35 cores (64-bit) + a 400MHz Cortex M33 core called STM32MP2 with mass production starting 2024Q2.
Nice! There aren't too many SoCs using the lower end a
ARM cores like A3x. Weird that they avoid mentioning the specifics of the GPU. I hope it's something with decent open-source drivers.