Scheduled to run from July 1st through to August 11th this year, this event is always very popular. The website will be up fully on May 27th. You then have to be FAST to get tickets to lots of the classes! I have always missed out, but there is still a lot of ongoing stuff to enjoy even if you can't get into a workshop.
Website link (bookmark it/put it on your alarm) : http://www.taipeicaf.org/News/NewsContent.aspx?id=128&NewsID=584