We’re just starting to roll this out! It's a slow expansion b/c we're monitoring usage closely, so even if you have 100k+ subs you may not see it yet. We'll be expanding to more channels in the coming months and you should see a notification at that time. Thanks!
Awesome! Merch is also still rolling out–activation of these features is random (like all feature roll-outs) so it happens gradually over time. Thanks for your continued patience, hope you get it soon.