iPhone OS4 Multitasks, Adds Ad Network, Uni-InBox, iAds, Game Center and

iphone-os-preview-OS4.pngSteve Jobs revealed the latest iPhone OS 4 today with new features, multitasking a new ad network, SDK and enterprise features.

iPhone OS4 offers seven multitasking services, which will allow tasks to be performed in the background while preserving performance and battery life. Users could make Voice over IP call while playing a game or checking email or listening to music.

The new organization tool is folders for holding information. Email features include a unified inbox fro switching between inboxes, organizing messages by threads, and opening attachments in 3rd party apps.

iPhone OS4 includes iBooks to browse, buy, and read books on a
mobile device. Users can read books while listening tor music
collection. Books can be browsed by title, author, or genre.

Advertisers can opt for media-rich iAds, a potential source of
revenue for developers. iAds will act like applets instead of taking
clickers away to the web. Gamers can social-network in the Game Center that offers gamer-matchmaking, leaderboards, game achievements, and friend-tracking.

Developers are given more access to edit events in the Calendar and
create SMS messages. Developers can develop apps that for photos and
video playing/capture.

The iPhone OS 4 will ship this summer for iPhone and iPod touch, and
for iPad in the fall. A developer beta is available now.