Is Ebonmaw, the Terror of Zaun, non-canonical at this point?

If you've played the old Twisted Treeline, you'll remember this dragon before Vilemaw took his place. Ever since then, nothing's ever been said about Ebonmaw in the story.

It'd be a crying shame if he's been classified as "ret-gone", so I think he needs to be added to the Zaun lore scene at some point. Maybe something along the lines of this (it's a rough draft, so take appropriate salt):

Ebonmaw was once a feared fire dragon who roosted near Zaun for nearly a hundred years before being slain by dragon hunters. His remains were brought to Zaun, where scientists planned to reconstruct and reanimate him using the same process that had been used on Urgot. But after augmenting the dragon's body, when they used necromancy to revive him, he broke free of the scientists' control and killed them all. Now more dangerous than ever, Ebonmaw roosts on the tallest skyscrapers of Zaun, daring anyone to challenge him.

I know we got Aurelion Sol recently, but who says we can't get a Ridley-like dragon at some point? It'd be an ideal Champion to have a HEAT mechanic like Rumble.