Check out this official Nissan site to keep updated on service bulletins and recalls for your Leaf as they become available.

http://nissan-techinfo.com/TSB/TSB_xml/ ... ZE0)+11-12

Keep in mind your Nissan dealer will have access to this info and provide it to you during service visits, and recalls will be communicated to you via mail, but it is sometimes nice to get informed ahead of time and on your own terms. Also, with the virtually maintenance-free Leaf, visits to your dealership will be very infrequent!