Where did the Solar Hawks spring from?

[Emperor's Furor]

Solar Hawks* Damn heat stroke.

 

I've been into Warhammer 40k for well over 15 years now and I'd never heard of them, then they sprang up in the most recent codex and I was flummoxed, did I really miss a chapter for that long? Was it a brand new chapter? I only ask because I'm narrowing down what chapter I want to do for Primaris and found them in the codex. 

Edited June 19, 2017 by Emperor's Furor

[deathspectersgt7]

They are a recent addition . There is not much on them but I do have squad of them. 40k wiki has a small write up.

Edited June 19, 2017 by deathspectersgt7

[smart_arse]

White Dwarf Feb 2013 has a command squad of them featured in an article about kitbashing.  Looking at my copy atm and it says they were created by Jon Flindall.  Also fairly sure I have seen a photo somewhere of a small force of them on display at Warhammer World.