Apple will delay the release of the iPhone 2.0 software until early July. But when the firmware does ship, it will offer plenty of new features for iPhone and iPod Touch users.

Apple announced the new release date for the iPhone 2.0 update as part of a demonstration of the software during Steve Jobs' Worldwide Developers Conference keynote presentation on Monday. Originally, Apple had expected to release iPhone 2.0 in late June.

When it does ship, the software will introduce a host of new features. The iPhone will add a contact search that allows users to enter a name and instantly find who they're looking for. Full iWork document support lets users view Pages, Numbers, and Keynote documents. Apple also will offer full support for Microsoft Office documents, including PowerPoint presentations.

iPhone 2.0 adds much sought-after bulk delete and move capabilities to its Mail application. Mail users will be able to save images from e-mails into their Photo Library.

Apple will also add parental control features, allowing parents to turn off explicit content, YouTube, iTunes Store, and the forthcoming App Store.

As announced when Apple first unveiled its iPhone 2.0 plans in March, the software update is free for iPhone users. iPod Touch users can update to the firmware for $9.99.

In addition to outlining iPhone 2.0 features, Apple executives also profiled the iPhone software development kit that allows developers to build native apps for the phone. In a 33-minute demonstration during Monday's keynote, a steady stream of developers showed off the games and apps that will be available via the App Store later this summer. Companies demonstrating their wares included Sega, Loopt, Pangea Software, TypePad, Cow Music, and Modality.

"We think we have a fantastic platform here for people to build incredible applications," said Scott Forstall, Apple senior vice president of iPhone software.

Jobs also spoke about the enterprise features in the iPhone 2.0 update, highlighting many of the capabilities first showcased at his March demo. New enterprise features will include push e-mail, push contacts, push calendars auto-discovery of Microsoft Exchange servers.

As this article went to press, the keynote was continuing. We'll have more information on iPhone 2.0 as it becomes available.