However, unlike with WP8 and its NT kernel, other apps have no access to the lockscreen, so all you'll get at a glance will be calendar appointments or sparse notification icons for email, calls or SMS. Any missed tweets or Facebook interaction, for instance, will remain just that if you pull your phone out of a pocket and glance at it.
ENGADGET: Windows Phone 7.8 hands-on: cosmetically yours Hands-on