Are you exited for the new Dexter ?

I never finished watching the original Series. I loved it at first but like you said, it became mediocre. I was in the middle of a Season, maybe 5 or 6, definitely after Trinity. It was pretty much the same thing every single time: Dexter finds another killer, someone he can relate to and they understand each other but in the end he has to kill them.
Plus the show started to make him have emotions he shouldn't have and legitimately care about Rita. Apparently in the books Rita is never anything more than a cover, which makes sense.

My son is

I didn't even know there was a reboot! lol and you're so right about how the show progressed.

I'll give it a chance, but reboots are rarely as good as the original, so I won't get my hopes up.

When does it start?

And I thought a Dexter was a breed of cattle 😂😂

Yes! The trailer looks really good