Microsoft has launched a site to show people who might be interested in the Lumia 640 how it will look with Windows 10 Mobile , with a cool background image and a selection of apps based on their personal interests.
The site begins by letting users pick a Start screen background image, then lets them pick two categories of app interests, such as Travel, Business, Social and more. Once they are selected, the users see their simulated Lumia 640 Start screen. Clicking on the Start tiles offers up more info about each app, and the page also offers a quick way to purchase the smartphone.
The site would seem to indicate that Microsoft is preparing people with older Windows Phone devices to get the Windows 10 Mobile upgrade when it is officially launched later this year.
Thanks to @Sachin_990 for the tip!