Just started a new team game on Bullrun
After seeing a couple of neutrals my team has spotted Devils and Green Dragons in cities that were set as Random Production. I don't ever recall seeing these types of units before and I remember Snotling changing the Random Production early on in Beta4 to prevent hordes of Devils and Dragons from filling neutrals.
So either you've changed this back to allow such units to appear randomly or all the experimenting with the site has somehow undone that fix.
KGB