Apple today released iOS 4.0.1 for iPhone, addressing the algorithm fault in signal strength calculation reported as part of the reception issues and iOS 3.2.1 for iPad which address WiFi connection issues.
The release follows the first beta of iOS 4.1 seeded yesterday to developers containing a few minor updates, and comes just a few hours before Apple are due to address the press regarding iPhone 4, presumably to discuss the recent press coverage regarding the signal reception issues.