We've been wondering without any real indication one way or the other if Instagram would be making it's way to Windows Phone, but it seems like the app is definitely coming to BlackBerry 10. The way this news came out has actually been kind of funny.
Originally, Venture Beat reported that BB 10 would not be seeing Instagram any time soon, but Kevin Michaluk of CrackBerry pulled a power card. According to Kevin, his sources are far better than Venture Beat and he says it's almost certain that BB 10 would get Instagram.
According to sources, RIM still has a great relationship with Facebook, which now owns Instagram. Add that to the fact that Facebook was part of the keynote at the BlackBerry Jam Americas
conference, and it seems pretty likely that Instagram would come to BB 10.
Of course, Facebook also has a great relationship with Microsoft, and we've yet to see Instagram for Windows Phone, but that could very well change with the launch of WP8.