It's been 3 months now, what happened to the Cass tail-update?

Riot first announced the introduction of the tail update back on 7.3 after doing some experiments on the PBE for half a month.

Back then the patchnotes promoted this update as an actual change to her live-self, and yet it never made it onto public servers. No one even seemed to notice the screwup, except for those few people who actually played this champ on a regular basis.

Fast forward by 3 months and there's still no trace of the tail-update, nor any sign of it even coming out in the immediate future.

I'd like to know why there has been an ongoing silence about this update and how a feature, which was conisdered as good as finished, could experience such a massive delay. I'd really appreciate it if someone from the team which is handling the project would actually drop by and give us a lifesign.

Cassiopeia has been forgotten for far too long already, I think it's about time she finally received some kind of attention. And this tail update is just the first step at making things better for her.