The major update is the inclusion of the "campaignEmailStatsAIMAll" method. In order to use this method, you would need to have AIM Reporst enabled on your MailChimp account.
It's an upgrade that cost around $49 one-time fee. It will enable you to retrieve MailChimp stats on a subscriber basis and this CFWrapper method will help you update your own CRM system with the Mailchimp history data.
Other updates were mostly basic code clean-up and error inclusion for the methods "login" and "campaignEmailStatsAIMAll"
(+) testCampaignAIMStats.cfm to test your AIM stats
(+) testCampaigns.cfm includes now a link to AIM stats per campaign.
(+) mailChimp.cfc with added methods.
Note: There have been users downloading the cfc and I would really like some feedback if it's working not working, something missing...
Happy New Year! May the force be with you!