In Pictures: New Firefox mobile OS

Mozilla officially jumped into the crowded mobile OS field at Mobile World Congress in Barcelona, where the company demonstrated an early version of Firefox OS, which is being developed under the Boot to Gecko project.

Just as Google rejiggered Chrome into an operating system, Mozilla is doing something similar to its Firefox browser by OS-izing it. As for when Firefox OS will be released, phones running it are slated to debut in early 2013 first in Brazil.

Here are 10 facts about the upcoming OS that are known as of this writing.