The epson K3 printer and ink series seems to have 2 shortcomings, the biggest of which is having to change black inks when we change paper. The second of which, some feel is slightly constrained rendition of "true blue" skies.
In my case, I dealt with the first issue by keeping my 4000 and adding a 2400 with the photoblack ink, in order to get the exellent black / gray tones that K3 can render on good glossy / semiglossy / luster / satin finishes.
I expect that my 4000 will keep on chugging up through epson's new system debut, which I'm guesssing is next year preceeded by several "leaks" of eminent product announcements in order to try to keep folks from bolting to canon
I'm, curious how canon inks will hold up when tested by Wilhelm, and I'm also curious how tough the printer itself will turn out to be in real world experience. It is, I must admit, nice to hear that it has user replacable print heads. I agree that detailed reviews are needed before making any decisions.
I'm guessing that the next epson will offer 4 K inks, ie adding a new "really really black" cartridge and perhaps the additive primaries RGB. I'll just point out, that the current epson has perhaps a tiny advantage ober the canon, having a smaller droplet size, and slightly greater printer resolution.
just my 2 cents..