Unfortunately, Angry Birds 2 will not be released for Windows Phones. We apologize for any inconvenience this may cause, and hope that you have a chance to play the game on one of the supported platforms, such as Android or iOS! Best regards, Pekka Rovio Support Team
Update: This new is confirmed by Peter Vesterbacka via twitter.
— El-Elyon עליון (@dovELfiore) July 22, 2015
@dovELfiore for the time being, yes
— Peter Vesterbacka (@pvesterbacka) July 22, 2015