It seems that a lot of G/S/C Pokemon are catchable in F/L including Ho-oh and Lugia. The game is also e-card compatible and the mix record option is still there. There’s a new Battle Tower, many sub-quests, nine new little islands, one of them having Deoxys on it. What is more, it seems that the programmers didn’t even forget the S.S.Anne truck, those that have played the old R/B will remember it :).
PS. You may wonder why there’s not so many updates since there’s so much to update with, well I am too busy with school obviously and therefore the new layout and updates are delayed a lot.