It adds in the Gentle Monorail Ride, which fits around paths and other rides to give your visitors a little scenic tour. Looks pretty nice!
Another new ride is the Water Coaster, allowing you to drench your guests while they get their thrills.
For those of you building your own scenarios, you will be pleased to know that this release gives you more options. You can make it so people cannot terraform, adjust their money and so on.
They've also added in skeletons, a mausoleum and sculpture props to make your parks look a little more varied too. Your entertainers can also now dress up as a scarecrow too.
There's more to this release too, see the release notes on their development blog here. Not mentioned in the development blog, but is mentioned on Steam, is that the top 5 entries to their recent build competition are now included in the game too. I've taken a look and some of them are absolutely nuts!
As always, I'm loving their attention to detail. Everything looks so slick, I really do love watching this game progress. It's still in Early Access of course, but don't let that deter you, it's really sweet.