A:AnswerNon pro chips (m1/m2/m3) only support a single external monitor by default. There is an adapter by other world computing that will allow 2 external monitors with these chips called "OWC USB-C Dual HDMI 4K Display Adapter with DisplayLink".
A:AnswerThe M2 version, that debuted July 2023, has the M2 Chip with 8 core CPU that splits between 4 performance and 4 efficiency cores; a 10 core GPU, a 16-core neural engine, and 100GB/s memory bandwidth. It's 64bit and runs MacOS.