Microsoft is keeping the developer community informed, where they've announced the total pool of countries where they'll have apps available for download at the launch of Windows Phone 8. They've said:
[W]ith Windows Phone 8 we're dramatically expanding our footprint around the globe. Consumers will be able to browse and download apps in more than 180 countries at launch.
Considering that this number was 63... the jump to 180 countries is quite the leap, nearly three-fold. If you're a smaller Windows Phone developer, your app just launched into 117 more countries, this could be a make-it-or-break-it situation for some app developers. Microsoft also took the opportunity to reiterate that in-app purchasing is making its way to Windows Phone 8.