We earlier covered some great new easily visible changes in Beta 4 release of iPhone OS 4 which includes the new AT&T’s Internet Tethering setup wizard.

Since, the release of beta 4, iphone developers started digging into SDKs to discover the changes it brought to iPhone through its previous update and they found something really exciting.

There are enums setup for iPhone / iPod / iPad Flash & Camera in OS 4 Beta 4 which basically shows that what messages these devices gonna pop out based on the condition of the device.

If you look at the messages shown in the picture carefully you will see most of them are related to the use of Flash and they have separate lines for iPhone, iPod and iPad too.

Well, iPad is going to get OS 4 update during fall. So, the next update (with OS 5) for the iPad will probably the fall again, next year. I’m guessing this will continue for long. So, we gonna keep finding iPad related tweaks in iPhone OS until Apple decided to put out updates during Summer.