I happened to do a check for updates this morning and found an update available. I installed it expecting to go from ND3 to NE3, but instead found that it took me to NG1. The only note with it said this build includes "Kid's mode" (or Child mode? I can't remember).
I posted a screen shot over here:
NG1 this morning | Galaxy Tab Pro | XDA Forum
I posted a screen shot over here:
NG1 this morning | Galaxy Tab Pro | XDA Forum