I thought I read somewhere that one ink could be reused, which would probably be matte shade 1, but I can't find that reference now, so perhaps I've confused that with something else. But even if that was the case, it wouldn't make for much of a saving, so yes, you need new inks. IJM have said that there will be an introductory offer for existing customers to ease the pain of switching. I've got a rather large stockpile of K6 inks and so it would need to be a mighty good offer to get me to switch early, notwithstanding the reported attractions of Pro. I say reported, because IJM are doing a particularly good job of spruiking Pro well ahead of its release to build the hype, so much so they must have been studying the way that Sony and Fuji and others pre-leak all their new cameras and lenses. To be fair, if it really does perform as described then it will be a major advance. I'm just a little puzzled that after all these years of being told that we need seven shades, or perhaps six, now we only have four cool shades and four warm, as I understand it. I guess all will be revealed in 32 days, 15 hours and 28 minutes .... and counting.