CNET news is reporting that they expect PC shipments to continue their decline through till 2018. Likely, Apple products, such as the iPad, will continue to push this erosion.
Whether the post PC era is upon us remains to be seen. There is, of course, much evidence to the fact. Regardless, the iPad and its application base continues to grow significantly. The form factor is fantastic and the device can do far more than initially intended for it. Time will tell the story but the evidence looks strong as to the nature of these changes.
If we are entering the post PC era, many manufacturers will have to adjust to the point that some will just get out altogether and concentrate on their strengths.