mattTI may be thinking overly optimistically here, but is it possible that Valve is purposely holding off on releasing the pyro update because of i61? It would actually be pretty impressive if their reasoning was holding off to avoid shaking the meta right before the largest competitve TF2 event of the year. Maybe that's getting my hopes up but who knows. I was pretty impressed by the last blog post; it has me thinking that maybe Valve has revamped their interaction strategy with the community.
sigsegv said they refused to fix a bug last year just in case it caused a regression during i58 so wouldnt surprise me
edit: found the source
https://www.reddit.com/r/tf2/comments/508bzl/tf2_update_for_82916_83016_utc/d722uhh/?context=3