All the pharmaceutical companies are working on the next generation already. They also know that the initial wave of sales from the first PI available will be huge.
I've been very interested in new meds. I think the PIs coming next year will rule for only a few years. Vertex knows this and is working on the second generation of PI. I love this link about all the meds in the pipeline and their status.
http://www.hcvdrugs.com/