The media tour in 2 days (where 100 content creators or so will release videos and website articles about Dawntrail previewing new areas and systems).

The nearly 100 interviews Yoshi-P probably did with those creators/journalists.

The live letter scheduled for the middle of the month where we will see a really hype Launch Trailer made of actual game footage of the MSQ. This tends to be a lot more of a spoiler than the normal trailers, so people have to choose carefully if they want to spoil themselves a bit in exchange for hype.

Sometimes they also release a music video of the main theme of the expansion alongside story footage on their youtube channel.