The folks behind Noodle Tools are making a number of changes to the program for the new school year. They range from the minor to the major--from the addition of time zones to integration with Google Docs. Here is a series of posts from their blog that explain the new features. Notice on the last one that there are more changes on the way in the next few weeks.
Day 1: http://www.noodletools.com/blog/archives/134
Day 2: http://www.noodletools.com/blog/archives/167
Day 3: http://www.noodletools.com/blog/archives/182
Day 4: http://www.noodletools.com/blog/archives/197
Day 5: http://www.noodletools.com/blog/archives/210