It seems that the final trailer was released, and the release date for the series announced, at D23 over the weekend. Here are my thoughts.
It's cool to see more of Harvey Keitel's character, Peter Sadusky. I always suspected that he knew more than what he was telling.
The reference to “daughters of the plumed serpent,” spoken by the character played by Catherine Zeta-Jones, seems to imply to the Mesoamerican mythical figure Quetzalcoatl.
It also seems that the late father of the main character—Jess Valenzuela, played by Lisette Olivera—will play an important part in the story.
Indeed, later footage implies that Sadusky knew Jess's dad.
It looks like we might see a full-on treasure room, possibly filled with items found by Benjamin Franklin Gates (played, of course, by Nic Cage in the movies).
Finally, the two-episode premiere is scheduled for Wednesday, December 14th. If the suggestion of 10 episodes from IMDb.com is accurate, then it should run until February 8th.