It’s sunny, it’s Sunday, and it’s time for some swag! Last week we were giving away a cool pet-friendly Android t-shirt and today we’re going to announce the lucky winner as well as give you a chance to win some new swag.

Photo: Killian Bell/Cult of Android

Every platform has its own share of power users who know their way around the OS and how to extract the very maximum, in terms of performance and efficiency, from the device running it. The secret behind a power user’s efficiency are his tools (read: apps) and experience.

While I cannot help you with the latter, I can definitely list down some apps that are a favorite of Android power users community, which should help you in extracting the very best performance from your device.

Last week at its I/O conference in San Francisco, Google announced Android L — which it pegs as the biggest update to the OS ever. Yes, even bigger than Android 4.0 Ice Cream Sandwich, with which Google finally started taking design and UI performance seriously.

In its 3 hour keynote, Google explained all the new features that Android L packs including Project Volta, a new Material Design, a faster and more efficient runtime and more. However, even apart from the above changes, Android L includes a lot of new goodies, which Google did not mention at its keynote, probably due to the lack of time.

Worry not though, as we list down five such features below, which will greatly benefit the end users once Android L lands on devices later this year.

Earlier this month, Google had unveiled the Project Tango development tablet costing a whopping $1024. The tablet comes with a multitude of sensors and cameras allowing it to see the world around it in 3D.

Google gave the attendees at I/O a look at the development Project Tango tablet in action and also revealed that it would be releasing a consumer version of the tablet with LG — slated to go on sale sometime next year. 

The development team behind Replicant OS, an open-source operating system based on Android, have discovered a security flaw with Samsung devices that can provide remote access to your data. The “backdoor” is found in a whole bunch of Galaxy-branded handsets — including the Galaxy Nexus — running “most propriety Android systems.”