O2 also says that the update will commence January 31st
Windows Phone Colombia is another source of information that is repeating that the long-awaited Windows Phone 7.8 update will start rolling out on January 31st
. At the same time, Telstra has prepared a table that shows an update schedule for its Windows Phone lineup which shows the Nokia Lumia 800 receiving the update beginning January 31st. Add to that a tweet from O2 that the update will be out at the end of January, and by the preponderance of the evidence we can say that January 31st will be the start date for the update.
The update will bring resizeable
Live Tiles, the Bing daily lock screen wallpaper, twenty new themes, and various small enhancements. The idea is to make those Windows Phone 7.5 users feel like their handset is new and fresh. This might keep current Windows Phone users from jumping to another OS once their current contract expires.
(translated) via WPCentral
All of the signs point to a January 31st start date for the roll out of Windows Phone 7.8