Well, you are in luck! In the last month or so (since I posted the schedule), the article for Tuesday's class has been taken down. Instead, in addition to the "Did You Know? 6.0" video, I'm updating the reading list with the following sources on e-texts:
"How the E-Book Will Change How We Read and Write" by Steven Johnson
Wordnik, the online dictionary by Erin McKean
"E-Books Expand Their Potential" by Julie Bosman
You might also want to look at this website, Institute for the Future of the Book