Alongside iOS 4.0.1 for the iPhone, Apple today also released the iOS 3.2.1 Software Update for the iPad. According to Apple’s release notes, the update brings improved Wi-Fi connectivity, fixes for issues that could prevent copy and paste of single-page PDF documents in Mail and cause video playback to freeze, improved reliability of video-out when using the iPad Dock Connector to VGA Adapter, and adds Bing as an option for Safari’s search…