I did a brief write-up about PIZZA here: https://peakd.com/spt/@theacks/my-introduction-what-is-usdpizza-and-a-splinterlands-giveaway
You can also find a lot of information at their website: hive.pizza
And mostly, if you take a look at @thebeardflex (PIZZA's creator), he's blogs about all the latest updates
In the meantime, have your first slice of !PIZZA on me.