Microsoft and Nokia's industry-altering announcement of a strategic alliance  back in February has today been bolstered with the signing of a  definitive agreement between the two companies. In announcing the inking  of the paperwork, the Microkia crew point out that they're already hard  at work developing "a portfolio"  of 
Nokia Windows Phone devices, which will be shipping "in volume" in  2012, but there's still a twinkling hope that they can get something out  on the market in 2011. Nokia devs have started porting key applications  and services to Windows Phone, with mapping and navigation getting a  highlight mention, while there will indeed be a "Nokia-branded global application store  that leverages the Windows Marketplace infrastructure." Notably, this  is described as a single portal where devs can serve their apps to users  of Windows Phone, Symbian and Series 40 devices -- it'll be interesting  to see how they work out the details of that. There's also confirmation  that Microsoft will pay Nokia multiple billions of dollars as part of  the agreement, some of which will be spent on completing an intellectual  property-sharing agreement between the two teams. So yes, the third  ecosystem is well and truly on its way. 
 



