Apple: Multitasking coming to the iPhone this summer,

Thu Apr 8, 4:23 pm ET

One of the biggest criticisms leveled at the iPhone and the iPad — that it can't run third-party apps in the background — will be fixed at last (partially, anyway), with a little help from iPhone software 4.0, Steve Jobs announced Thursday. The major OS revision will arrive this summer for the iPhone, while iPad users will have to wait until the fall.

The new iPhone software will pack in more than 100 new features, Jobs promised, including (besides multitasking) a unified email inbox, support for Apple's new iBookstore, a social gaming network, a series of interface enhancements (such as app folders and wallpapers for the home screen) and — yep, it was bound to happen — a new, Apple-controlled mobile ad framework, with Apple set to keep a generous 40 percent of future ad revenue for itself.

Without further ado, then, let's get down to the nitty-gritty:

Multitasking
Here's how it'll work: If you're running an app on the iPhone — anything from the core Mail app to, say, a game like Tap Tap Revenge — you just double-click the Home key to pull up a small window shade at the bottom of the screen, which can show four apps at a time (just swipe to scroll through more running apps). Tap an app in the new multitasking "dock" and you'll switch to the app, with the first app's state saved in the background.

So, will all these apps actually be running in the background? Well, no (if they did, they'd slow iPhone performance to a crawl and eat up battery life, Jobs said). That said, Apple will be allowing a few selected processes to run in the background, including music, VOIP, and location-based apps.

For example, Pandora will still play music while you're browsing on Safari (you can even pause Pandora or skip tracks using the iPhone's "lock" control bar), you'll be able to answer and maintain VOIP calls (think Skype and the like) while you're working in other apps, and location-aware apps like Loopt will be able to track your location in the background via cell-tower triangulation. (An icon will appear in the iPhone's top status bar to warn you if a background app is tracking your location; you'll also get to tweak a series of new location-based privacy settings).

http://news.yahoo.com/s/ytech_gadg/ytech_gadg_tc1530