Apple has released the fourth beta of its iOS 9.3.2 update to both developers and public beta testers today. OS X El Capitan 10.11.5 and tvOS 9.2.1 also saw a fourth beta release for developers today. The latest developer and public betas haven’t seen any major changes as it appears they are turning out to be more bug fix releases than anything. Simultaneous use of Low Power Mode and Night Shift had been reactivated as of iOS 9.3.2 beta 2.

Apple pushed the first OS X 10.11.5 betas a month ago, focusing primarily on under-the-hood bug fixes and improvements for developers. These updates are far smaller than the recent OS X 10.11.4 updates that were released last month. That OS X update had added password-protected Notes, expanded Live Photos support, and more.

These small updates look to be bug fix-focused releases potentially looking to improve general stability before the next operating systems are set to be announced at this year’s WWDC. Developers looking to get caught up on the beta builds and read through the release notes can head over to Apple’s Developer Center for more information. Downloads for tvOS, iOS, and OS X can also be found through Apple’s Developer Center. You can learn more about testing public betas through Apple’s Beta Software Program.

If you discover any unmentioned changes in the latest public betas, email tips@9to5mac.com or mention us on Twitter @9to5mac to let us know.