The Baltimore Sun reports that Moscone West’s event schedule has an event scheduled for the week of the 6th in June. The listing is named “Corporate Meeting” running from June 6th to 12th most likely represents the dates for WWDC 2009.

Apple historically announces WWDC dates in mid-March but in the past it has been easy to pinpoint the dates due to generic events appearing on the Moscone West calendar.

Speculation has now begun on whether Apple will officially begin shipping Mac OS X Snow Leopard.