Arch Linux 2015.02.01
                    https://www.archlinux.org/

Arch Linux is an open source Linux operating system that allows users to customize it as they see fit, in order to create the ultimate Linux computing environment that they need for a specific task.
Allows you do anything you want

With Arch Linux you have the freedom to do just about anything. At first, you will download a simple, CD-size ISO image that provides a strong base for your future Linux system. Then, you will need to install the operating system and add as many packages as you want.
Supports 32-bit and 64-bit computers

It is a flexible, fast and lightweight Linux distribution that follows the KISS (Keep It Simple Stupid) principle. Most of its “under the hood” parts are quite simple to understand and tweak. It is supported on both 64-bit and 32-bit architectures.
Follows a rolling-release model

The system follows a modern rolling-release model where all the packages are updated regularly, keeping your machines up-to-date at all times, without the need to download a new ISO image and upgrade.