photonboy :
Are these APU's going to have a maximum of FOUR cores (eight threads)? I would imagine that's a certainty as Ryzen CPU's have two CCX modules, so they could use one half of the CPU (the space of one CCX module) for the GPU, with Infinity Fabric the communication between the GPU and CCX module.
However, what limits will DDR4 bandwidth put on the GPU? Will people continue the mistake of getting a single 1x8GB module for budget gaming builds and get worse performance than they OTHERWISE could have?
The new models they're referring to may actually be Ryzen Refresh CPUs, and not a Ryzen APU. Anyway yes the APUs will be limited to 4C/8T (for the near future, anyway).
DDR4 will be somewhat limiting for the higher-end models with lots of shaders... BUT on the desktop you'll have the option to run faster modules, in many cases substantially faster than mobile RR. Of course some OEMs (and the occasional noob builder) will build single-channel configs, but that's nothing new and in most cases pretty easy to resolve.