Hi,
I purchased the MK3 plans not too long ago (I think I was the last person to buy them). As Phill stated, they were the MK2 plans with some hand changes to match the MK3, but they were very incomplete. None of the full-scale "blueprint" sections for the bulkheads, top deck, etc were updated so that they were useless in the end. Cost me $100 (I think). I did contact Greg, et al, but they told me that was the best they could do. If I had the time I guess I could have tried to develop new full-size drawings by somehow scaling various portions of each section, but that would be too much work/guesswork. At that point, I might as well start designing my own.
If you want them, you can have them (just pay for the shipping).

Steve