Well, iPhone OS 4.0 may just have a flashlight feature, according to this Youtube video:

So, it’s quite possible that iPhone OS 4.0 may have a flashlight feature. Hopefully, this is not a bug/glitch and is real. I guess we will have to wait and see though at the WWDC 2010 which is in just 5 days. PocketFullOfApps will have a roundup of the WWDC 2010 so you can get all the info and stay up-to-date.