There are only a couple of posts about in around.

Here's the Discord link: https://discord.gg/U8ZAXBb
You can get all info in the server (although it seems to be a little quiet tonight).

This post by @ironshield gives you a little more info
https://steempeak.com/hive-177682/@ironshield/steem-city-sim-a-virtual-city-on-the-steem-blockchain

And the link below will take you to the unofficial launch post. It's a week old, so the first mmovers advantage of 2steem/card is over. It's no 4 steem/card, but the rest is still accurate
https://steempeak.com/hive-177682/@raymondspeaks/move-over-catsmakekittens-make-way-for-steem-city-the-unofficial-announcement