What if the Uchiha we saw is a child Sasuke and Sakura had before salada? He could have Sakura's pink hair color (cause it definitely isn't Sasuke's black)
Maybe Sasuke actually spent time with him and trained him so he has the 3T sharingan.
But when they had Salada and Sasuke left him with Sakura he got angry and left the village?
Thoughts?
Firstly, a boy with pink hair? Do you think it's a nice design of a character? It will look stupid.
If he is Sasuke's child, why would he be infuriated with Sasuke and siding with Akatsuki? Just for this lame reason that Sasuke left him with Sakura or didn't give him much attention?
He looks like a real deal to be someone collaborating with the Akatsuki. He definitely has other purposes, and is supposedly really strong. Plus, why would he side with Akatsuki regardless of whatever reason he left the village? It isn't that simple.
Plus, there aren't any family pictures that were shown or other evidences that he is Sasuke's son.
I'll pass on this thought easily.
No their only child is Sarada.
The new Uchiha is an experiment most likely and Sarada will obtain his eyes.
He's not an experiment. That's sounds really lame, since he is going to be quite a relevant character, visualizing from his collaboration with Akatsuki. Someone who is just an experiment isn't like that.
Also, someone who is just an experiment wouldn't hold grudge against Sasuke for any reason and be so concerned about the Uchiha clan. He's definitely an Uchiha himself, but his lineage is unknown.