One of these seems to be the ‘next week’ trailer from the end of tonight’s Doctor Who, The Power of Three, while the other is badged as having come from Canada’s Space channel.
Both tease next week’s mid-season finale and final Ponds episode, The Angels Take Manhattan, and both offer a certain amount of spoilery material. Most of it you’d probably be okay with, though I’d say some bits of the the Canadian trailer go too far.
Kudos to the uploaders.
Now… to get back into the right frame of mind for The Power of Three somehow when all I really want is to skip to next Saturday now.