I think the android bug linked in the article is much more informative than the article itself.
Basically:
1) Android phones can already animate the screen @ 60 fps in software in most cases.
2) When they can't, it's not because the CPU is too slow, it's because there is other stuff happening (GC, etc.). A GPU can't fix that.
The GPU can offload most of the graphics intensive tasks from the CPU, utilizing the GPU instead of letting it sit idle. freeing the CPU to focus on GC tasks. In addition, most of the animation work done with Dalvik code can be moved into a dedicated thread / task with highly optimized code backing it.
Basically: 1) Android phones can already animate the screen @ 60 fps in software in most cases. 2) When they can't, it's not because the CPU is too slow, it's because there is other stuff happening (GC, etc.). A GPU can't fix that.