Elop Sunday also introduced Jo Harlow, who was promoted last week to executive vice president of smart devices at Nokia. She previously held a chief marketing post.

Harlow said Windows Phone will start running on a Nokia device sometime this year, and presented two slides of , including one slide that has already been widely seen on blogs.

"It's an exciting contemporary and modern platform," Harlow told reporters. "We are the partner that will bring innovative design and hardware to make great mobile products with Windows Phone."

She said teams from Microsoft and Nokia are working together already in Iceland on the first Windows Phone product.

Elop also sought to lessen fears of Qt developers writing applications for Nokia's Symbian and Meego operating systems.