Hi Gianfranco,
I've looked through your slides, very nice, covered many aspects of FirefoxOS.
I definitely wanna hear an introductory talk.
And this should be interesting to JS/web devs, since FirefoxOS does not require JS/web devs to learn another language.
Your slides is very good, wonder if you can also have some quick demos.
Because I think the win for FirefoxOS is the ability to convert your current web app to a FFOS app with minimal effort.
Anyway, these are just my thoughts, maybe ping Cormac on twitter see if he'd think it's a good topic for January :)
Tianyi