Nokia will go Android in 2015.
Nokia was very vocal lately about Microsoft's slow pace of progress with it's Windows platform. Behind the scenes it's quite possible that after waiting patiently for 3 years and nothing to show for, Nokia's board said enough of this BS and wanted out of this relationship.
This could actually be the real reason why Ballmer was forced to resign, in addition to that $900 million booboo.
Could it be that Nokia is gathering their ex-engineers, maybe from Jolla camp etc., to launch a new Nokia phone in 2015? There's definitely a good chance that they would go for an Android model then. I'm sure everyone in Nokia has thought about the what-ifs of Nokia and Android at least once.
Edit: What if Nokia bought HTC for their Android expertise?