Mozilla have just announced that they are renaming Boot to Gecko to Firefox OS, the company has talked of having support from multiple carriers worldwide, as well as a couple of device manufacturers. Firefox OS is a totally open source OS, and its interface it built from HTML5 and CSS web standards, making it very customizable.
A proof of concept was recently shown off running on Samsung's GALAXY S II, with the company pointing out its responsiveness to touch input, a 3D graphics demo, a full SMS client and on-screen keyboard, as well as a store for various web apps. The first Firefox OS-powered device will feature a Qualcomm Snapdragon processor, and should launch sometime in early-2013 in Brazil through Telefonica's Vivo brand of entry-level handsets.
Source: TweakTown