The change was prompted by several things, but among them was the need to clarify that SAS70 is not a certification, and there is no such thing as "SAS70 Compliant." Watch this video from the American Institute of Certified Public Accountants (AICPA) http://bcove.me/9i0iqynv.
Below are Google Images search results on the term "SAS70" that exemplify the kind of misuse that existed in the market.
Only 6 months after the launch of SOC reports, the following logos are already appearing.
These just in:
Without some kind of intervention, it would appear that SSAE16 is bound for the same fate as SAS70. I believe that we can help prevent that from happening by educating our clients about the assurance a SOC report provides, and encourage them to use the logos provided by the AICPA and CICA.