Lease ends in 2 months but no mail received?!?

Please advise,
My 36-month lease ends in 68 days (Apr.11), but I haven't received any mail from NMAC about end-of-lease procedures/options. Is that odd? It seems late to me to still be waiting for their mailing? How far ahead of end-of-lease date should I see something from them?
I've been expecting mail from them for months and now it seems really late to me...?

Thanks in advance for any insight!

If you want to turn the car in, it's pretty standard. There is end of lease info available from Nissan online, or you can call NMAC and ask for a packet. Pay close attention to the info on what constitutes 'excessive wear and tear or damage'. If you want to extend your lease, you may be able to do that, if you have a 2012 or 2013. There is a separate phone number for that, which you can find in the End of Lease topics.