As I stated in a earlier post I did this jailbreak on my iPad one and downloaded sbsettings folder enchancer remove background and fake clock up. They seem to be working fine. So now I have the best of both worlds on my iPad. 4.3 and the jailbreak. I don't mind it being tethered because I don't let my iPad get below 30 percent.
i haven't read anything yet regarding when 4.3.1 will be available. however, just as important as the new Jb, mobile substrate needs to be ready before anything happens on my end