@Ratherly
I didn't watch the final session as by all accounts it was crap, but did Debra not die? She was in the new trailer.
I was hoping they'd done a 'Debs' death was just a dream' like Bobby Ewing stepping out of the shower, but no, apparently she appears as an 'internalised' character, ie imaginary.
I hated that Deb was killed. The whole last season was dreadful and yet somewhere around the middle (eg John Lithgow season) it was just such good TV.