Part III is now available at http://knitpurlhunter.com/kal/. This is where you will add the heel. Pattern is calling for a short row heel. If you have never worked a heel in short rows don't fear it isn't difficult. The website does provide an online video to guide you or else stop by the shop for assistance.
Part IV - The leg. Due to the Thanksgiving holiday that clue will be released on Wednesday, November 23rd.