Apple has released the second iteration of the developer betas today for iOS 9.3.2, OS X 10.11.5, and watchOS 2.2.1. At the current time, there's no sign of tvOS 9.2.1 beta 2, but we'll keep an eye out, as these things tend to be released on the same day.
Note that there are no new front-facing features in any of these updates. Version numbers tend to go major.minor.bug/security fix, so not only is this a bug fix update, but it's the second iteration of one.
iOS 9.3.2 still has known issues with Dictionary and Simulator, although it fixed issues with iBooks and Safari. The OS X 10.11.5 release notes didn't say anything except for instructions for installation and bug reporting.
If you're already on the developer beta, you can grab these builds by checking for updates through Settings, the Mac OS App Store, or the Apple Watch app. If you're not on the developer beta yet, you can head over to the Developer Center and download configuration profiles to install on your devices. Be aware, however, that once you install beta software on an Apple Watch, there's no way to roll back.