About three years ago Sony debuted their first Sony a7C model, a compact full frame camera with a body similar to their APS-C models like the a6600 but with the internals of the Sony a7III…howbeit improved in a number of areas. They shrunk the IBIS (In-Body-Image-Stabilization) system, improved...
The Sony a7C II refreshes the compact full-frame with a 33MP sensor, the addition of a front control dial, a dedicated 'AI' processor, 10-bit 4K/60p video and more. It's a definite improvement, but it helps if you value its compact form.