The Samsung Galaxy Note 4 on Sprint is now receiving its Android 5.1.1 update. Weighing in around 615MB in size, the update also brings along some performance improvements and new multi window features. At this time, Sprint has yet to post an official change log with all of the changes found in this build.
If you have yet to receive the notificiation for the update, head into your phone's Settings, then About Phone, and finally check for the update. Already received the update? Be sure to let us know how it's treating you, and any changes you may have noticed.
Thanks for the tip, Richard!