IOS Version 4 for iPhone 3G or what was left of it

Formed a few days ago for iPhone / iPod Touch version of the operating system iOS 4, totally dissimilar in different For example, in the version for the iPhone 3G is not implemented some of the features implemented in a version for iPhone 3GS. 

The most offensive - not multitasking, the main advantage iOS 4. The ability to run multiple applications simultaneously can use only the owners of iPhone 3GS/iPad, as well as the iPod Touch (with regard iPod data is not reliable).

Also, Apple iPhone 3G owners cheated a search in Wikipedia and the selected search engine directly from the launch screen, and no support for Bluetooth-keyboard. In this manner encourage customers to buy new devices.

And not the most important - features of multitasking.