I want to share my good fortune here, especially as this forum was the source of it. After spending almost 1/2 hour on Hold with NMAC (I never do that, but today I used my cell phone and did other stuff at the same time) I got through to a Nissan end of lease specialist who told me, before I could even state my reason for calling "I can answer your question instantly." They are indeed extending Leaf leases by 24 months from the end of the original lease. I'm still not sure if it's only the 2013 Leaf, but I got the impression that it may include other years as well. In my case, I just got an extension until June of 2017, at the $159 a month ($149 original payment, plus $10 sales tax) I'm paying on my current extension. That's great news for me! Instead of scrambling to try to finagle an overpriced lease this Spring, I can wait until the 107 mile range 2016 SV is the car they want to clear out, instead of the one you must beg and bribe (heavily, with huge down payments) to lease. This is a very smart move on the part of Nissan, as it will keep a lot of people like me in the ranks of Leaf drivers.
The number to call, BTW, is 1-800-854-3310. That was given me by the first helpful Customer Rep, in case I was disconnected while being transferred to the EOL specialist.
2013 "Brilliant Silver" SV with Premium and no QC, a 2009 Vectrix VX-1 W/18 Leaf modules, and 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.