"The new schedules for the trains that leave North Station will be available in the next two weeks, then take effect in mid-December. The schedules for trains that leave South Station will now be published in the spring."
Be sure to read "Starts and Stops" every Sunday in the Globe. Usually on page 2 of the Metro section. Great tidbits about transit related issues.
We'll have to see if the draft schedule that I was able to get my hands on is still the one put into effect in the spring.