Tac,
I have no insider information, but my gut-instinct tells me we will get a green P-38. I dunno, I just see it. The news stated this next update will have more aircraft than any other and it stated a concentration on Pacific War. We got a green P-40 and an A-20, I can't see updating the P-38J to a green variant to be too difficult or out of the realm of possibility. So far I'm very happy with what I'm seeing and though I have my fingers crossed for a few other types (including a very non-important addition, a 3-tone F6F-3) I won't be upset if I don't get any more of my wish-aircraft. I'm with you though on a green Lightning.
[edit] I mean P-38L