Part of iCloud functionality seems to be already active on iPhones, under a tab in the app store called ‘purchased’. This new tab contains a history of all applications downloaded with your account, including those not purchased on your iPhone. This functionality went live shortly after the Apple keynote yesterday. Some folks may object to having a history of apps on your device that you downloaded! If you have downloaded a lot of apps like me, luckily this list is searchable! Check it out for yourself if your curious!