Apple has confirmed its annual Worldwide Developers Conference (WWDC) will take place June 9-13.

The WWDC 2008 invitation being sent to developers declares the show to be "A landmark event, in more ways than one". It depicts two (not one) Golden Gate bridges, generating some speculation that the show will see Apple implement additional features using iPhone's location technologies.

This year's event will offer three key tracks: Mac OS X, IT and iPhone, the company said. Developers can expect in-depth information on Apple's newly-announced iPhone Software Development Kit.

"With the development opportunities of the iPhone platform added to those of Mac OS X Leopard, this year's Apple Worldwide Developers Conference promises to be the most exciting, informative conference ever. Don't miss this chance to see the latest technology and meet the engineers behind the two most innovative platforms for your creativity," the company urges.

iPhone topics to be covered at WWDC 2008 include "Getting Started," "Build Powerful Applications," "Create Engaging Media Experiences," "Target the Web" and "Integrate the Technologies of iPhone.". There's also hands-on sessions in the iPhone Lab.

The WWDC experience extends beyond the session schedule to include lunchtime and evening activities and the chance to relax with Mac community leaders and Apple engineers.

Apple offered 300 sessions, 94 hands-on labs and 1,200 on site Apple engineers as part of WWDC 2007.

WWDC costs $1,295, or $5,180 for a five-pack of tickets. Tickets combined with membership of ADC cost $1,694 (Select membership) or $3,499 (Premier membership).