Next month developers will get their first look at the next major version of the Windows operating system, Windows 7. Microsoft will demonstrate its progress at the annual Professional Developers Conference next month. “Attendees will have the opportunity to attend 21 different sessions that drill down into the details of developing for Windows 7,” said marketing manager Denise Begley. Windows 7 will use the same kernel as Vista, which is seen as a positive thing for the compatibility, stability and timeline of the new OS.