Originally Posted by Ulmont
"Sorry Travis, Zahn, and the OT, but your non-canon now, so just sit on your shebs and twiddle your thumbs."
Nowhere have they said that any of it is definitely non-canon. Claiming that the entire Mandalorian culture has turned to pacifism is a falsehood, as those shown in The Clone Wars have been proven to be a separate faction, distinct from the Mandalorians that Traviss has portrayed, so her work isn't necessarily non-canon.
And i've no idea what you mean when you say that the Original Trilogy is now non-canon.