Good to see this progressing. The App does not seem to be rolled out in my region, but all changes are visible in the cloud UI. I suppose Charmacas nailed it with a list of all the new features already. Noteworthy and maybe not obvious (at least to me) are:
I suppose a "per-network, per-SSID" bandwidth restriction is not so easy to implement as a per-client restriction, given the bandwidth usage can be distributed across multiple or many access points and in a bridged environment with an external gateway, there is no single point to control the bandwidth. There is obviously some sort of "invisible virtual controller" and for "NATed" networks one could use the "virtual gateway" to control the bandwidth there - but not for bridged environments, where traffic would flow directly from individual access points to a gateway. In my opinion, if you want to implement this - I'd use a separate VLAN and limit the bandwidth at the gateway router.
If I am going to controll the entire network/SSID/VLAN bandwidth with my gatway router then I would do the same thing for the per client bandwidth as well. Surely if they can prevent each client from comsuming X amount of bandwidth on the SSID then they can prevent an entire SSID from consuming X amount of bandwidth.