"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 already working together in Iceland on the first Windows Phone product.
Elop also sought to lessen fears of developers writing applications for Nokia's Symbian and Meego operating systems.
"You'll see volumes of Symbian devices in coming months and years ... which gives us the ability to carefully manage the transition of Symbian and Windows phones," Elop said. Nokia's plans for Symbian devices will provide "a huge opportunity for developers," he added.
Elop said that Meego devices will ship this year to take advantage of Qt, a cross-platform developer framework. But he added that Nokia has no plans to put Qt on Windows Phone. "It would confuse developers and consumers," he said.
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