Thanks to Seb for the reference.
D2L has posted the latest filings from both sides, detailing their competing interpretations of Blackboard's patent. (Before you can decide if somebody has infringed on a patent, you first have to decide what that patent means.) The judge will evaluate these competing claims in what's known as a Markman hearing.
I haven't read the documents, but according to Seb, D2L's filing references the Wikipedia page on the History of Virtual Learning Environments that the ed tech community collectively created in response to the Blackboard patent. If you contributed to that page (and hundreds of people did), then give yourself a pat on the back. You played a small role in the legal history of our profession.