Just a quick community note about some momentum in projects that often times directly benefit the drupal edtech community.
LTI is moving along in the community it seems -- http://drupal.org/sandbox/jzornig/1809350
Epub would be an excellent format to support exports to which funnymonkey has some work into that I need to test -- http://drupal.org/project/epub_export
Textbook is now significantly more robust then in the past with its own API for defining new style sets and Context module integration to allow for conditions to trigger the application of textbook styling. Still with a commitment to accessibility and ease of setup -- http://drupal.org/project/textbook
Request was put in recently about the idea of getting user progress module to talk to tincan API -- http://drupal.org/node/1829346
OG is also significantly stabilized (though I say this after fighting with it much of the last week) and I'm hoping by Beta3 will be "good enough" to start to build distros and platforms on. Funnymonkey has a lot to do with this as do people that heavily support complex projects of this kind like Phase 2.
Speaking of P2, Open Atrium 2.0 is getting more love -- http://www.agileapproach.com/blog-entry/moving-forward-open-atrium-20 This is great news because all the projects required to build that will need patched / upgraded / refined. ELMS distribution based most of its architectural core off of Atrium for this reason (strength in numbers) and so Ulmus/ELMS will be able to benefit greatly from this work.
MOOCs are all the rage and I have a distribution that I'm working on to get a decent starting point for people to build massively open online courses with. It's kind of the "Drupal as course" initiative I posted in the ELMS group and it's still early on but everything to assemble it is from some of the best of contrib -- http://drupal.org/project/mooc
For those that don't know, popcorn is awesome! Yes the food, but also the mozilla library for interacting with and augmenting HTML5 based media -- http://drupal.org/project/popcornjs is an attempt to integrate this into Drupal. If you haven't played with popcorn yet I HIGHLY recommend checking it out as I think it will one day replace flash based interactivity on the web (or something like it) http://popcornjs.org/demos
Course module by EthosCE appears to be picking up some momentum as well and has a lot more code out in the open then in the past -- http://drupal.org/project/course . It also has active development in both the Drupal 6 and Drupal 7 branches and is definitely worth a look.
There is also a lot of movement locally around Drupal / ELMS / edtech systems at Penn State that I'm not at liberty to divulge at the moment but Drupal at PSU is alive, well, and going to be deployed all over the place here! (thanks in large part to http://drupal.org/project/nittany )
That's it for now, if you have other modules / projects that have helped you in developing edtech projects please add them in the comments!