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In the fluff as having trade permissions is not a confirmation of playable rules... I'm not believing bell of lost souls "confirmation"
It should be noted, the BoLS article has its snark level maxed out.
Squats are mentioned once in the fluff section of the rules, so they've said, "this can only mean one thing: Squats are definitely going to be a new army and we should all get hyped about their return, setting our expectations meteorically high."
I wouldn't hold your breath for any squat rules until we've seen some squat miniatures (they aren't going to encourage you to buy third-party models, after all).