Tonight, I get a notification from my Windows Phone regarding the availability of an update.
There is 3 updates available; bad thing, installation process is installing the updates one by one
Don’t loose your time, the ‘Phone update’ section available through the Settings menu didn’t get it until you connect your Windows Phone to your linked computer.
To get the update, connect your phone to your linked computer, launch Zune client et voilà you will be notified that an update is available. If not, just try to force the update detection (http://blog.hametbenoit.info/Lists/Posts/Post.aspx?ID=226)
This is really strange to talk about Windows Phone 7.8 as the build number of the latest update is 7.10.8858.136.
After applying these updates, the start screen has been changed to reflect the new Windows visual, the new titles icons and the new Office Mobile client (Office Mobile 2013)