Lol.
Just saw an interview with Mark Hamill asking for his comments on the name. Naturally he was very cautious to ensure that he gave nothing away. Video found here.
Not sure if I like the name. It goes back to the notion that there is only one Jedi remaining and that is Luke who is the last (my interpretation). What about other Jedi? We know a few escaped the purge and even some took up apprentices (ie Star Wars Rebels) so why is Luke (or perhaps it is Rey) the last?