iOS 9 and OS X El Capitan Public Beta is available now

Anyone interested in previewing Apple's still unfinished and in-development iOS or Mac OS software can sigh up for the Apple Beta Software Program. This allows early builds of the upcoming OS's which are slated for a Fall release. While access to new features and interface changes are always fun, do consider that there may be some bugs or issues with beta software, the whole point is to use the applications, find the bugs and report back to Apple so they can speed up and improve their development. 

As with most beta software, users are advised to back-up their devices and urged to install the beta software on devices they don't depend on for critical work or personal use.