Apple has extended its early registration discount offer for developers wishing to attend June’s WWDC until 9 May.

Extension of the cut-price ticket deal means developers can save up to $300 on the cost of their ticket for this year’s show, widely expected to be the biggest event of its kind so far.

This year’s WWDC runs between 9-13 June in San Francisco, with twin threads for Mac and iPhone development, along with a third set of sessions for IT deployment. The event features over 150 sessions and labs covering the gamut of development for Apple’s platforms.

“Whether you want to develop applications for iPhone or the Mac, you can get expert assistance at this year’s Worldwide Developers Conference from Apple engineers and learn hands-on in the highly informative sessions and labs,” Apple declares.