Big advantage of the APU is its application on a business machine or general purpose PC for the average consumer without high demands for 3D video processing.
Low power consumption
Extended battery life
Less real estate required on the motherboards=smaller motherboard size=can create smaller powerful devices (ie tablets)
There are many other advantages. APUs are already here:http://en.wikipedia.org/wiki/Accelerated_Processing_Unit
Intel HD video solutions are included on some 1156 and 1155 processors. You just need a board (H57, Z68, H67, etc...) with the video out and the graphics are handled by a GPU on the CPU.
AMD's Vision processors are APUs that have been around for a little while now. There are Tegra 2 APUs by Nvidia that tablets are being built with.
This is definitely not some up and coming technology. It's already here.
What would I need to see for me to choose AMD? Comparable price for comparable performance to Intel's processors and architecture.
Then I would begin to consider AMD again.
You can get an i5 2500k for $225. What price point do you consider mid-level?