It has been a year since the Android Lollipop was launched so it is the right time for Google to finally release a new and improved successor to the Lollipop. And for all intents and purposes, it seems the company is ready to do just that, with the Android M.

Android M appears to be the official name of Google's next operating system, but the sweet name that is allotted to a new system is still a tightly guarded secret. However, insiders have revealed that the Android M is known internally as the Macadamia Nut Cookie. Hopefully, Google will come up with something catchier and less of a mouthful when they finally decide to roll out the Android M.

Unfortunately for most people, the only people who can get their hands on the Android M right now are developers. The Android M Developer's Preview 1 and 2 are currently available. There are reports that the Android M Developer's Preview 2 can now be downloaded and installed on devices like the Nexus 5, 6 and 9.

It can also be downloaded on the following models – the Xperia Z3, Z3 Compact, the Xperia Z3 Tablet Compact, Xperia Z2 Tablet, Xperia Z1, Z1 Compact, the Xperia Z Ultra, the Xperia E3 and M2, the Xperia T2 Ultra and the Xperia T3.  

The Preview 2 is said to be more stable and has more bug fixes. Google is also reminding developers to report back and give feedback so that their developers will know what bugs to work on and what to improve.

The Android M Developer's Preview 3 was initially scheduled for a July launch but it has been delayed to give Google more time to improve the "near final" build of the system. And once the third and last developer's build has been released, consumers only have to wait for a short time until the Android M appears.

Android M is said to be released by the third quarter of 2015, probably by September. And as with all Google updates, the Android M is free.