So that's it? Just XDA? That site confuses me to no end, but I'll try seeing what is going on over thre. It's unfortunate that no one here knows anything else, I thought Gingerbread came out around November last year?
Just to clarify, gingerbread DID come out, but only on select devices. Not all phones have gingerbread yet. Many may never get it at all. The Optimus series does not have gingerbread yet. This is because certain parts of the Android Operating System are device specific (like the kernel for instance). This means that we either have to wait until LG makes those parts for our phone, or create them ourselves.
When ejdme says some people at XDA are porting gingerbread to our phone, what he means is they are trying to create NEW parts to Android that do not yet exist (since LG has not created them yet) in order to make gingerbread work on the optimus. This is a slow process. It may not be done before LG gets around to putting gingerbread on the phone. In the meantime, the best you can do are custom roms, or join up with a group attempting to do it and code some of it yourself. Addtionally, there are people in this forum working on it, but as far as I know, it's not functional yet. I hope that helps explain the situation.