We recently launched the ability to manage your email subscriptions on the Developer Site:
A month ago, we discovered a bug in our Developer Blog email subscriptions that prevented posts from getting emailed. We fixed this bug today and sent out all posts that were never delivered. This ensured that you didn't miss any important announcements (some posts dated back to mid-January). We apologize for sending the emails all at once and any confusion that this may have caused.
Please let us know if you have any questions in the comments below.