Thanks to our contact PF108 for the following.
We have the regular group of Losties filming out at the beach/jungle today(Mon), Jack, Kate, Hurley,Sayid, Lapidus, Locke, Claire, and Sun. This is a continuation of a scene they have been shooting.
What I found interesting tho is they are putting together a group of extras called "Locke's Others" not sure if they are in that scene with the Losties, but they will be shooting soon.
Seems like the Others maybe breaking into factions. Also I'm not sure if this is refering to Flocke or the real J. Locke.
Source: PF108@DarkUFO