The big event of last week is of course the Drupal Dev days in Barcelona: not so many tweets about it though, but don't worry I've managed to find some interesting links!
A sprint in Paris took place last week on Web Services in Drupal 8, here's the summary by @Crell. This sums up how you are going to code with the future entities in D8 and what protocol is discussed for providing Web Services in Drupal http://groups.drupal.org/node/237443