Thanks for reaching out. And excellent question. These cameras are still brand new, so I haven't had the chance to put much info out there yet.
The Blackmagic Design Studio Camera 4K Pro and Studio Camera 4K Plus definitely have some advantages over the Pocket Cinema Cameras when it comes to live production.
Actually, you can basically think of them as a Pocket Cinema Camera 4K in a studio camera body. Same basic sensor and processing in a different body, and with features more in line with live production.
However, autofocus is not something that has changed in these cameras. The autofocus is the exact same as the Pocket Cinema Cameras - single touch focus only. Autofocus is also not something I recommend for a vast majority of live production situations, so I personally do not consider autofocus an option or pertinent when the cameras will be used for live multi-cam production. The only times I see autofocus as something worth considering in live production is for Steadicam/gimbal operators, and maybe handheld operators (but only to assist in getting initial focus, not to leave autofocus on all the time).
If focus is your main issue or concern, then the new Studio Cameras would be a good fit because they can allow you to add the Focus Demand and control focus from behind the camera. Operators will also get a larger screen, helpful for getting/maintaining focus.