iOS 4.0 for Ipod 3g Mc User

21 June apple release its new os 4 named as ios 4 for iphone and ipod user , but in ipod 3g which is basically not 3g its have same hardware as 2g updated bootrom and nothing else. just released whit the 3rd generation iPod Touch (32 & 64 GB models).and after upate os 4.0 there is no Multitasking and Home screen and Battery percentage . ,
According to apple ipod 2g and 3g Mc model not having the efficient hardware for multitasking and homescreen, ios also use more space iOS 3 you had about 40mb left for apps and stuff, the new OS leaves you with 10 to 12mb and thats after a fresh restart. I've already tried free memory and System activity monitor neither works well anymore.
I have ipod 3g mc model but after updating from os 3.1.2 to iOS 4.0 i am not much happy with this new apple iOS 4. this os is not good for iphone 3g , ipod 2g and 3g mc user.