The third teaser trailer showed Harry on his way to his first lesson:
Pensieve lessons were shown on the OotP DVD sneak peeks.
According to a test screen viewer, Harry and Dumbledore do not physically appear in the memories.
I should add that the present day Dumbledore and Harry do not appear in the memory scenes. Harry sticks his head in the pensive and watches it from there. It is not implied that he sees everything from above, but its like by sticking his head into the pensive immerses him into the memories world
This scene was the main focus in the first trailer, released July, although special effects weren’t complete as they were in the third trailer.
Rachel: That was the first memory he sees -- I believe -- is the orphanage.
Aaron: But –
Rachel: But –
Aaron: -- like what –
Rachel: -- and the orphanage scene is very much like the -- the trailer . So -- we -- I mean -- you saw most of it. There was -- there was very little extra added on there. So (laughs) –
Vince: That's all –
Rachel: -- but it was a really good scene.
Vince: That's all the lines that we heard in the trailer in that scene or is there like a little bit more lines in that scene? In the orphanage scene.
Rachel: There's a little bit more. Like –
Vince: Like what?
Rachel: -- it's a little bit -- it's not quite as jumpy. Like he talks about -- you know -- the fact that he can talk to snakes and stuff like that. But it -- it wasn't -- I mean that -- there -- it was in the trailer, but it was slightly -- a slightly –
Rachel: -- a slightly different order.
Vince: Edited. Yeah.
Rachel: Yeah. But there was no talk to Mrs. Cole or anything.
Scott: Huh. I wonder if –
Rachel: They took –
Scott: -- they cut that because we saw a trading card with –
Scott: -- Mrs. Cole and Dumbledore talking it looked like.
Rachel: I -- they may have been cut. But it wasn't there when I saw it. (laughs)
A picture of Dumbledore with the memories came from a trading card.
A picture of Harry filling the Pensieve with a memory emerged.
Stuart Craig has built the Orphanage set confirmed in the HBP sneak peak and the trailer.
The third trailer, released November, showed Dumbledore’s arrival to the orphanage with special effects added.
Third trailer screencaps
A test screening viewer talks of this sequence.
Dumbledore does not really speak with Mrs. Cole. He just follows her up the stairs as she shows him to Riddle's room. What you saw in the trailer is very close to what we saw.
Two trading card pictures have emerged from this scene.
The fourth trailer, released March, showed Tom looking at his box of treasures in his burning wardrobe.
The ABC sneak peeks showed the end of this scene as the memory dissolves away.
The Behind the Scenes Featurette from February showed Dumbledore in this first lesson, telling Harry that Slughorn “possesses something I desire very dearly”.
The first Slug Club meeting will not be on the train. As Slughorn asks Harry to this party in Hogsmeade, the first meeting will most likely take place in the timeline here. However, this scene could be anywhere in the movie.
A picture of a Slug Club dinner has surfaced. Counter-clockwise, the following people are in the picture: a 6th year student played by Elliot Francis, Harry, Hermione, Neville, a set of twins (probably the Carrow twins they have cast), McClaggen, Slughorn, Blaise, Belby and Ginny.
The ABC sneak peeks and the Japanese TV trailer showed multiple shots of this scene.
A test screening viewer describes Belby.
Belby was at the slugclub stuffing his face full of ice-cream, oblivious to the fact that his answer about his not being in touch with his uncle had made him lose favor.
A picture shows new characters, twin sisters Flora and Hestia Carrow. Any relation to the elder twins with the same last names is unknown.
A picture shows Hermione and Neville at the dinner.
According to test screening sources, Ginny comes late due to her split with Dean.
We don't SEE it happen ... at Slughorn's dinner party, though, Ginny comes in late with her eyes all red and Hermione whispers to Harry that Ginny and Dean have been fighting "again" and so it's kind of implied - I don't recall if it's ever implicitly mentioned!
Test screening viewers also talk of Neville’s involvement in the Slug Club.
Neville is at the first dinner that Slughorn holds - the one that Ginny's late for, but is never seen with the Slug Club again.
Two calendar montages are of the Slug Club dinner scene.
A picture of Harry and Slughorn has emerged. It was first unclear what the context of this scene was, but the set and costumes are the same as the above picture, so it probably straight after that scene. This scene also was seen in the Japanese TV trailer.
Scott: Oh and then from the Slug Club there’s pictures we’ve seen both from the calendar now and before that that we were confused – there’s a scene with like just Harry and Slughorn and it’s either – we’re guessing before or after the Slug Club dinner.
Scott: And, what’s the context of that, and – when does it occur?
Rachel: The context is basically that – there’s also in the script leak, Harry talks about it, Dumbledore does say to Harry that he wants him to allow Slughorn – Slughorn to collect him.