Apple just released iOS 4.0.1 for the iPhone 3G, 3GS, and 4. The only purpose of the update, according to the release, is that it "Improves the formula to determine how many bars of signal strength to display" and makes your signal bars bigger. Up to you to decide whether an update that will amount to a cosmetic change is worth the 300MB download. If it is, plug in your iPhone and click Update to grab the latest. More »
