Clearly it's a rather, strange photo, and it seems to show the cast of the TV show at a table on the Island. One could percieve that this may be a methaphor for the Last Supper story, with John Locke in the centre as the character of Jesus. This is all theoretical; the fact that the characters are arranged similarly to that of the Last Supper may be purely coincidental. In the photos we can see all of the following characters; (from the left) Illana, Richard, Claire, Saed, Kate, Saywer, John, Jack, Jin, Ben, Hurley, Sun, Hurley, Frank. We can assume that these will be the characters included in the new series.