I'm playing Bravely Default now and it's pretty good so far. The battle system is definitely intriguing and the job system is fun.
But that's just it. The job system seems fresh simply because the last game (that I can think of) to use it was Final Fantasy V. It's almost EXACTLY the same, save a few classes and skills. You would earn abilities that could be applied to other jobs, allowing for hybrid classes.
I'm not saying BD is bad by any stretch of the imagination. It's a good game, one that will hopefully popularize the JRPG genre again. But to call it the best JRPG in years seems silly to me; outside the battle system, very little is original. Other games like Xenoblade and Radiant Historia went further when modernizing the JRPG.
It's a great game. But not a "revolution" or the "best JRPG in years." If anything, it's a traditional JRPg that's just getting a lot of attention.