I really don't think Hashirama will return. :(

[mangaanime7000sspt09]

sure he will! yamato might turn into hashirama or something

 

[kotoamatsukami]

Madara would rape him inside an out just ugly

 

[kellzfresh]

All past hokages will return. Mark my words

 

[Hori]

All past hokages will return. Mark my words

I marked them, but you're a lieyer no hoKage would return

 

[yondaime4]

just wait my friend, at least until we know what sasuke is up to. personally i think sasuke will revive izuna and hashi who are like itachi and naruto to sasuke and try to talk madara down ending in the biggest showdown. but thats just me