Samsung has finally shown off the first in its Windows Phone 7 Mango range with the launch of the Samsung Focus S and the Samsung Focus Flash - plus promising the WP7.5 update for older phones 'this fall'.The Focus S follows the same design language of many other devices we're seeing at the moment, with a huge Super AMOLED 4.3-inch screen and 1.4GHz processor - all in a package 8.55mm thin.It's also got an 8MP camera on the rear and a 1.3MP sensor on the front for video calling, and runs Windows Phone 7.5 (or Windows Phone Mango to those that have been following the story).