Read 4.3 will early 2011???
If so, I think they will wait to untether jailbreak that...
That's a long wait.
I'm happy with my tethered jailbreak, but it's hard at times.
For example, when I'm downloading something with safari download manager, it keeps retrying and can't download it properly. Only way to fix this is a reboot, but when I'm downloading, I'm mainly on WiFi, and my computer is around.
It's just tedious to do.