still 2 left in stock on Amazon,, and lots brand new buy it now on ebay.. but,, you are most likely right,, might be discontinued, so folks wanting
a super nice 135 2.0 DC,,, better hurry.
Personally, I bought the 105 DC ,, love it,,
I would need to borrow / rent the zeiss for comparison, the reviews I have read are mixed, with the Nikkor manual AIS holding their own
against the Zeiss,
I have a fair number of what is considered ultra sharp nikkor lens, and the difference between the less ultra sharp is so minute,
I see some steps in my lens
consumer grade zooms,,, OK sharpness
older pre AI manuals,, sharp but not as sharp as
newer AI and autof focus D lens,, and pro zooms,,
and then a few of the "legend" lens,, sharper,, but tiny tiny degrees.
maybe years from now,, some of the Zeiss will come down in price in the used lens market,, be fun to pick up a couple to really compare.