Almost every player in the smartphone arena has multitasking with them except Microsoft. Microsoft have implemented some sort of multitasking in their Windows phone 7 platform through tombstoning. But it doesn’t allow you to switch between multiple apps. Hope Windows Phone 7 team solves this issue with "Mango" update. Here is the mockup of WP7 multitasking and task switcher by a Windows Phone 7 developer Jeremey Bell.
Info from the mockup creator:
I thought it might be fun trying to imagine what a proper task switcher and notification/background-service manager UI might look like in Windows Phone 7, so I created my own little mockup of what I thought it would look like. The idea is that you would press and hold the back button from anywhere, and then this UI would pop up.
Couple of main ideas in this mockup:
* The UI would allow the user to manage live tiles and toast notifications from one place. Very handy!
* It would allow the user to view, pause, and cancel any background services currently running, including (hopefully) any custom background services initiated by a third party app.
* The little bars next to each service represent the amount of CPU usage that service is taking up.
* When a user clicks on an app to switch to it, the idea is that it would be moved to the top of the back stack after it is re-launched. That way you wouldn’t go back to it again if you hit the back button normally.
Mockup done by Jeremy Bell