I think it will come out soon. That's based solely on the fact that I gave up waiting for a MkII and bought the current version at the beginning of the year.
I bought mine last July, but that did not trigger a new one at Photinika :-)
Resolution charts for the Nikon35mm f/1.4g are up on the digital picture, it is noticibly sharper at the borders and C/A is less. I'm not sure that it is enough better to matter though.
Note, it was tested on a D3X, so a little more resolution is to be expected.