I'm curious - does it automatically get the latest version of FF when it's released for desktop/Android? And does it support all of the functionality that comes with it?
i.e. will it now have the asm.js optimisations and similar?
i.e. will it now have the asm.js optimisations and similar?
More generally, FirefoxOS does not automatically get the latest version of Gecko, because the process for mobile operating systems is more complex. The operating system must first pass certification by (if I recall) both the constructors and the operators. This operation is both long and costly, so it is probably impossible to follow the Firefox desktop/Android 6 week release cycle for the time being.
However, if I had to guess, I would assume that FirefoxOS will receive about one big update every few months, with all the new features and optimizations of Gecko. I know, for instance, that some of the optimizations I have added recently to Gecko have missed the release train for the next version of FirefoxOS (I believe that's still 1.1) but should be part of the release after that.
Updating the underlying kernel would be more arduous.
Firefox OS is its own Operating System, so it won't be "released for desktop/Android." The initial versions was forked from gecko 18 so it's missing many SpiderMonkey optimizations such as the Baseline Compiler, Type Inference, Odin Monkey, and Ion Monkey. Luckily, updates (or building from source) have these and add quite an improvement! Whenever I updated my iphone, I felt every update left it slower. Now imaging upgrading your phone it it getting faster!