CPT codes are updated every January.
January 1st of each year.
The updated CPT manual is available for purchase in November for use beginning the following January 1.
Every year the codes are updated and published.
description of the code has been changes
The web comic, Savestate, used to updated every 2 weeks. It is now being updated once a month. This is usually during the first week of each month.
Immunization schedules are updated annually and published in January.
april 2012.
Supposedly every month
6 month
Akuma to dolce will be updataed next month.
WikiAnswers is usually updated 2-3 times a month. New bugs will occasionally pop up, new features are wanted, and new layouts are always suggested, so WikiAnswers is updated (usually on a Sunday) at least 2-3 times a month.
The Sims 3 Store online is updated once a month, sometimes more frequently, with new content.