Earlier today, Apple released the third public beta of macOS Mojave 10.14.5 to those registered in the Apple Beta Program. If you have a Mac registered in the program, you can download the update via the Software Update feature in Settings.
The build released today is the same as the one that was released to developers yesterday so don’t expect anything new or different. Indeed, the macOS Mojave 10.14.5 build in general is a bug fix and performance improvement release. So far, through three beta builds, there hasn’t been any new features found and only minor tweaks to the overall look and feel of macOS.
At one point, given that the new Apple TV app is in iOS and in tvOS, it was thought that perhaps we would also see it in this build of macOS Mojave. That doesn’t appear to be the case at this point. Attention for that app has now turned to macOS 10.15 which is expected to be announced at WWDC in June. The Apple TV app for macOS will be based on Marzipan, making it much easier to have the app across iOS and macOS.
As always, both AverageAppleGuy.com and Apple do not recommend installing beta versions of Operating Systems on your primary or daily use devices in case you happen across a crippling bug.