Official: Leopard to be demoed at the WWDC

NicleT has told us that Apple has sent to a restricted group of developers an email announcing the demo of Leopard during the next WWDC, which will take place August 7th-11th.
Apple announces that developpers will have the opportunity to meet engineers who have given birth to OSX.5 Leopard. knowing how Apple can be paranoiac, we suspect that they will not unveil hot tips; except if Leopard development is ahead on schedule...
Based on our current estimate, OSX.5 Leopard should arrive by the end of 2006, early 2007... in other words it is on track to eb released before Vista.