https://www.twitter.com/CiaraMcAvoy1/tweets
"@CiaraMcAvoy1: For my 1000th Tweet: Who will be playing Brian Braddock in the upcoming tv series #CaptainBritain?#Marvel Stay tune! pic.twitter.com/e0gbXKjdav"
"@CiaraMcAvoy1: @DuffMD I am being paid to do the promo poster so yes I'd say this is really happening."
"@CiaraMcAvoy1: I can't reveal anything yet but hopefully I'll be able to soon. Waiting for the go ahead from the co-producer"
"@CiaraMcAvoy1: @_Wobs It might take a while before the announcement (either early 2017 or late 2016) They're making a sizzle reel and it's gonna be awesome"
Well, this sure is interesting. If it does turn out to be real, who do you guys want to play Captain Britain? What network should it be on? And most importantly, given the character's ties to the X-Men, who owns the rights?
EDIT:
This is definitely real, she has her own wiki page: https://en.m.wikipedia.org/wiki/Ciara_McAvoy
She did the X-Men: First Class poster so that might confirm Fox is producing the series.