Although Apple has released public beta version of iOS 9 and OS X 10:11 El Capitan not long ago, recently, Apple continues to release iOS 8.4.1 version and OS X Yosemite 10.10.5 to programmers.
Overall, these are not the big updates, Apple will only focus on patching bugs as well as fix the problems related to security.
Additionally, iOS 8.4.1 with build 12H304 code and OS X 10:11 El Capitan with build 14F6a code also improve performance and stability for the Apple devices.
Meanwhile, iOS 8.4 version which was unveiled about 2 weeks ago with the launch of the Apple Music and Beats 1 online music application helped Apple to increase the number of updates from the users up to 40%. Besides, OS X 10.10.4 version fixed bugs of most applications such as Mail, Photos.
Expectedly, iOS 9 will officially be released in next September before Apple announces the new iPhone this year.