Steve Jobs has purportedly told a beleaguered iPhone 3G user that an iOS 4 performance boost is coming soon via software update. Here's the complaint:

I've waited patiently through 4.0.1 and 4.0.2, looking for a fix that will make my phone work again. I've read the forums that advise me to jailbreak my phone or use some other method so I can downgrade back to a version of iPhone 3, however I'm not prepared to use a method that is not supported by Apple.

And the reply from Steve Jobs:

Software update coming soon.

Sent from my iPhone

iOS 4 performance on the 2008 iPhone 3G has been so slow and stuttered for some that they've taken to doing clean re-installs and turning off Spotlight completely just to make it usable. If the email is real, and Jobs is referring to iOS 4.1 -- which is still in closed developer beta -- than the time frame is likely next month when Apple holds their traditional special music event and releases the OS.