Any of these handsets coming out on Metro are like this, I was stuck with the OTA update announcement for a year after rooting my Quattro 4G. Would never update after root, and there was no way to flash that phone back to stock, since they cut support on it and discontinued it... There was no developer support for that phone either. The day after I bought it no less they did this, thanks for warning me Metro! Punks! I hate the Metro Stores.
Also my F6 shipped updated to the I not the E software, so I was happy about that. I don't mind buying LG phones and rooting them because of their handy LG Update tool that lets us do it via PC and not OTA.