Like you can see Reggie is wearing Metroid shirt.
Even before this people exected that Nintendo will show Metroid Prime 4 at The Game Awards this year,
and not only that but that they will do something similar like they done last year with brand new Bayonetta game and reveal/announcement of Bayoneta 1/2, while this year we talking about Metroid Prime 4 and Metroid Prime Trilogy HD.