Microsoft is expected to announce the next version of its mobile phone operating system, Windows Mobile 2005, at the a developers conference next week. The Mobile and Embedded DevCon 2005 takes place May 9-12th at the Mandalay Bay Resort & Casino in Las Vegas.

Windows Mobile 2005 is no secret thanks to leaked copies that sprouted up on the internet. Some of the new features include:

• Increased support for QWERTY keyboards
• Mobile version of PowerPoint
• Updated versions of other Office applications

There is no word on when new devices running the software will begin shipping.