Airbus has done what analysts have been expecting for the past few months; announce a version of the A321 with the ability to fly a greatly extended range and finally match (and exceed) the capabilities of a Boeing 757-200 with winglets.
The 97-ton maximum weight will be achieved by the addition of a fuel tank in the forward baggage compartment and some fairly low-cost reengineering of the wing. Air Lease Corporation is the launch customer, with a memorandum of understanding for thirty frames. They have not, yet, stated where these aircraft will be placed.
To achieve a 4000-nm range, Airbus has envisioned a configuration carrying 206 passengers (16J and 190Y). They have also stated that, due to the extra fuel tank and limitations of the design, it is unlikely for this aircraft to be able to carry much cargo. This may, immediately, appear as a source of consternation if your airline relies on flying long sorties on narrow-bodies full of fresh fish. Otherwise, is it really a big deal? I would say no.