The back over thing sounds mildly promising, IF it has a powerful enough interface to the low-level parts of the main phone part. Now to vent some steam, because I care about Jolla (or what they could be). What *really* irks me is their seemingly main focus on how changing the back cover to another color and having the phone auto-read the contents of something saved on its flash memory (or equivalent) to change themes accordingly is "A revolution"(source jolla.com). A *revolution*. Ie. a game changer. Really? If it was just mentioned as a feature, I'd think "nice" and move on. But this just makes it seem like they have nothing else good to say about their phone but that you can change colors easily. Really, it's just basic autorun capability for hot-plugable media! Right now they seem to mostly hype themselves around the awesome nature of "showing you're an individual" by being able to change the color theme of the phone and the color of the back plate. A color someone else chooses to make available to you, mind. A concept which will probably hamper real theming of the menus and sailfish overall since it's not in their interest to allow any Sailfish install to not have "that Sailfish look(tm)" (see what happened with Gnome 3 in that regard). All this bigging up of trivial theming and claiming it will revolutionize everything and not even mentioning what capabilities the back cover really holds nor mentioning any real specs feels disingenous and fake. Color me a sad panda