The last page said "the bond with friends was the one to win". If you really don't think that's clear indication it's over I don't know what else to tell you. He MAY not be dead the very next chapter (I'm sure he's due for a little tnj after his defeat) but it's pretty clear we're moving on to the next enemy
And just so everyone remembers, being defeated doesn't always equal being dead you know. So for all of you coming up with scenarios where Obito gets controlled by Madara, etc, that's still a defeat. He's been beaten in battle either way