As far as I recall, CP/M 3 was really marketed as a larger TPA while increasing OS efficiency and features. Additional banks were generally not made available to applications, only an increased TPA and extra features.
It would appear that this system sets the "common memory" boundary to 80H, so each bank would then be 32K. For 128K total, that would be two 32K banks for the OS and a 60K (according to the load message) TPA for applications. Depending on how many OS optimizations were made, one of those 32K banks might be "free", although I suspect it is needed for directory hash buffers for the larger flash card disk.
But, an impressive looking little machine. Well done!