I mean, yes,
The End of Time, Part Two is David Tennant's swansong.
But it's also the moment we - presumably - get our first, brief, tantalising glimpse of Matt Smith as the Doctor. Whether he's just lying on the floor (a la Pertwee - Baker or most of the other classic series regenerations), or we get a "new teeth - that's weird" moment, or something a bit more, I'm kind of excited for that as much as for anything that's going to be in the actual episode.
But...do you reckon we'll get a trailer for the Smith & Moffat series right after EoT2? Do you reckon we
should? There's very little info out there for the forthcoming series (unusually, considering we normally knew the writers for the Davies series about 11 months ahead of transmission, with episode titles being released gradually throughout the year leading up to broadcast); whether this is because Moffat has decided to leave all the publicity to Davies & Tennant this year, or whether he's generally more inclined to keep such information closer to his chest, who knows? But, anyway - do you reckon we ought to get some sort of trailer straight after EoT2, or should it maybe be kept back a bit?