For Windows mobile phone users, there is good news. It is known that Microsoft has just issued a formal invitation to a conference devoted to Windows Phone developers in San Francisco on June 20. Invitation which has “A sneak peek of the future of Windows Phone” tagline is said to be an event that will showcase the next generation of Windows Phone which is Apollo.

In addition to the tagline, Microsoft’s invitation doesn’t give any other information. From previous circulated information, is known that Windows Phone 8 will bring a lot of improvement compared to previous generation.

via NeoWin