I see the tablet has this bulge at the edge of the screen like the phone do. I wonder if it is meant to protect the screen from scratches, but i don't like the feel of it on the phone when swiping. Curved edges would be offering better look and feel, take n9 for example, as always.

Margins between covers and launcher icons are huge, bad. Now if there are no cover actions, it is time to implement widgets, to me covers already are non-sticky widgets anyway, just rename them and offer a possibility to make them sticky + don't limit user actions. Make covers page vertically scrollable also. Take care, jolla!