People saying naruto will let the bijuus out but it won't happend.
Tbvh they will probly want go with him(since he like family to them just like Hagoromo is) and the bijuus outside will probly merge with the ones inside him.
He will probly put them somewere far away before he dies were no one can use them again until another ninja like Naruto is born again... lets face it you can only hold on to peace for so long(even in the real world) lets be realistic... there will always be some maniac like madara.
Tbvh they will probly want go with him(since he like family to them just like Hagoromo is) and the bijuus outside will probly merge with the ones inside him.
He will probly put them somewere far away before he dies were no one can use them again until another ninja like Naruto is born again... lets face it you can only hold on to peace for so long(even in the real world) lets be realistic... there will always be some maniac like madara.