Of course there are always plans to update everything.
However, KLAX (in some ways) is even more updated than the real airport is, because it already includes part of buildings that were still on planning stages when the airport was designed, and of course some parking positions weren't even known back then.
This is quite different from situations like KORD, which is in dire need for an update, since it has a whole new runway, or KLAS, which has a new terminal.
So yes, we'll update everything but, we first have to update KORD, then KLAS, and then we can start working on other sceneries. Many users asked for an update to JFK too. KLAX is far less in need for updates then all these ones, and it doesn't look outdated.