Currently, there are 2 OS X 10.11 El Capitan betas which are up for grabs. You can try out the developer as well as the beta version.
If you’re eager to get a glimpse at the new beta 7 OS X El Capitan release, use the Update tab( look for it on the Mac App Store). For the rest of you who are involved in the Public beta tests of El Capitan, you can get the beta 5 upgrade directly from the Mac App Store.
The developer beta (15A263e) as well as the public one (15A262e) reveal elementary changes, at least from a superficial point of view. However, those who take a closer look will see an improved Safari screen and the “Welcome to safari” page which is a novelty, well at least to those of you who aren’t familiar with the latter browser. Besides, users can also deactivate the “shake to find cursor” functionality. Something else that will catch your eye is the OS X 10.11 El Capitan logo which sports a pretty lively color. Eventhough these minimal improvements may not stimulate you, if you are using the former beta of El Capitan you may still be in the dark regarding the bugs and snags that have been fixed with the new release. So, it is important to have the newest beta build if you are curious to set-up the newest versions of OS X and iOS.
OS X 10.11 El Capitan is expected to make the scene in a few weeks and the new iOS beta will come along with. Keep your fingers crossed and hope to see the Golden Master build of El Capitan. The latter build means that there will be new features included right before the product reach the App Store.