CLC-951 is currently in a "we need a business decision" state. However, we've already switched from Fall 2012 (= "D", "2012") to Spring 2013 (= "B", 2013): https://jira.media.berkeley.edu/jira/browse/CLC-1001
So this needs to be updated somehow. I'd prefer that it happen through configuration, either by translating Settings.sakai_proxy.current_terms.first or with a new setting.