Apple Releases iOS 4.0.1 for iPhone, iOS 3.2.1 for iPad

Looks like Apple (AAPL) has decided it needs to see some iPhone headlines that don’t include the word “antenna.”

On the eve of the iPhone 4 press conference it is holding tomorrow, the company officially released iOS version 4.0.1, a software update it says “improves the formula to determine how many bars of signal strength to display” on the device and its predecessors (click images to enlarge). The update also resolves an issue that could cause slow syncing of data with Exchange ActiveSync.

Released in tandem with iOS 4.0.1 was iOS 3.2.1 for iPad, an update that adds Bing to Safari’s search options and promises to improve Wi-Fi connectivity as well.