The Windows Phone Blog posted an insider’s look at the improvements coming to navigation and some details about multitasking in the Mango update today. First up, they are updating the app list, to add the same sort of alphabet grid that you see in your people hub. So, you can just tap on the alphabet header and quickly jump to whichever app you wanna launch. To maintain the aesthetics, they have decided to show these headers only if you have more than 45 apps to prevent wastage of screen estate. Also, you can now search for your apps and launch them , the same way you search for a contact.
You can now press and hold the back button, which will show you a set of 5 ‘cards’ which show the last five applications you used in the state you left them. Flick left/right to see other cards, all arranged in the order you last used them. The Windows Phone team will be monitoring customer reaction to ensure a smooth experience and will consider adjusting the number of cards based on response.