Microsoft revealed on Wednesday that its Windows Phone 7.5 “Mango” update is available to nearly every Windows Phone user.

The software giant is opening the flood games for Windows Phone 7.5, ahead of schedule. “So today we’re fully opening the spigot —slightly ahead of schedule—and making Mango available to nearly everyone in the current delivery pool,” said Microsoft’s Eric Hautala in a blog post on Wednesday. “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 is now scheduling Mango updates for the LG Optimus 7 device on the Telefonica network in Spain. The software maker is also working closely with Orange in Europe to resolve some technical issues that are preventing the company from delivering Windows Phone 7.5 to customers. “Updates for a few phones are also still undergoing carrier tests,” revealed Hautala. “If this applies to you, I want you to know we’ve already prepared to expedite delivery of Windows Phone 7.5 to you once carrier testing is finished.”

Microsoft’s delivery of Windows Phone 7.5 “Mango” has been nothing less than impressive. The company plans to push out firmware specific updates next week to improve device performance. The updates will also activate new Windows Phone 7.5 features. “Not everybody will receive or require one: It all depends on your country, carrier, and phone model,” says Hautala. Microsoft’s firmware updates are expected to enable the Internet Sharing feature on a number of existing Windows Phone handsets. Microsoft previously revealed that the feature would require updated Wi-Fi drivers for existing devices.