As a surprise for Nokia Lumia 925 owners, they will be getting the Nokia Glance Screen Beta app. The always on clock which also notifies when the battery is low.
It’ll have night mode for reduced glare in the dark as well as the double-tap to unlock first seen in the Nokia N9 and now living in the new Asha touch series.
When I went back to the N9 for a week, I loved being able to just glance at it to see the time. No need to press the lock button or tap it. Useful as a bedside clock or just as a clock in your pocket.
Nokia Glance Screen will be available to most WP8 Nokia Lumia smartphones when the Lumia Amber update arrives. Not a limitation then for non-OLED screens (which would be the most power efficient, though Nokia has had this kind of always on clock on non OLED before).
What about notifications? Might we eventually see Sleep Screen?