Microsoft has said that its Windows Phone 7 Mango rollout has now been opened up to virtually all users on the first iteration of the company’s software.

"Today we’re fully opening the spigot —slightly ahead of schedule—and making Mango available to nearly everyone in the current delivery pool (see Where’s My Phone Update? for the details)," Eric Hautala, general manager, customer experience engineering at Microsoft wrote on the Windows Phone blog. "We’re excited most of our customers now have access to all the new features in Windows Phone 7.5. But we know there’s still work to do."

Microsoft also warned that from next week it'll start delivering some model-specific "firmware" from handset makers.

These updates are designed to activate new Windows Phone 7.5 features or improve your phone’s performance. Not everybody will receive or require one: It all depends on your country, carrier, and phone model.

Windows Phone 7 Mango review