Whilst I couldn't attend the "Lost" panel at Comic Con this year, 'Jeff' was able to go and delivers the following spoilers that were revealed by the producers:

1. Michael Dawson/Harold Perrineau Jr. will be back next season. He is not going to be in just one or two episodes, but rather he will be a full fledged cast member. Harold appeared at the Lost panel.

2. Despite the rumors, Lost is not giving up \"flashbacks\" in favor of \"flash forwards.\" Instead, the next few seasons will consist of scenes from all three time periods (the past, the present on the Island and the future).

3. They seemed to confirm that Claire and Jack will learn of their brother-sister status this next season.

4. The panel closed with a two minute clip of Dharma footage that I found difficult to decipher.