The books are now listed at Amazon.
What's odd is that they seem to have titles - weren't the Seeker books supposed to be just numbered (Seekers , Seekers 2, etc..)?
FWIW at least in the amazon listing the first book by David Mack is called Second Nature
and the second one by Ward/Dilmore Point of Divergence
Note: Since they only list Dilmore as the writer of Book 2, they just as well could be wrong about the titles as well.
Dayton confirmed on Twitter that they were asked to provide titles.