Boy Genius Report says that it has received word that iOS 4.3.1 is on its way soon, and that it will consist mainly of bug fixes and a security fix. According to BGR, these will include baseband updates for the original iPad and the 3GS; a fix for the memory hang that corrupts memory when reading large files from USIM filesystem; a fix for the NTLM authentication issue in apps and on the web; a fix for a problem that was causing Springboard and 3rd party apps to not recognise the iPad 2’s gyroscope; and a fix for the iPad 2 jailbreak vulnerability. BGR doesn’t mention if this last item is a fix for the recent iOS 4.3 security hole discovered at a hacking contest which was reported to Apple by the hacker, but I’m guessing it probably is. Also no word on whether or not the Verizon Wireless iPhone 4 will be getting this update, as it skipped iOS 4.3.
Source: Apple iOS 4.3.1 coming within one to two weeks? | BGR