Hi!
I think that this could be a good tutorial(s): Development of mobile apps using HTML5 + CSS3 + Javascript.
HTML5 seems to be a hot topic almost everywhere. I could imagine the cover, "Develop iOS apps using Linux and HTML5!". I believe that this could be quite appealing for several (new) readers.
I'm a little biased here (I'm an iPhone owner), but you can focus on Android if you think is better. The good part is that the apps should work in both platforms (if I am right) and you don't need to care about markets or approvals by some evil company in Cupertino...
What do you think? A good idea?
Javier