In April, Google launched image ads as part of their mobile ad service. 5 days later, the Mobile Marketing Association released new guidelines for mobile image ads. Today, Google is announcing that their mobile image ads are compliant with the new MMA specifications.
But don't freak out if you're using the old formats. Writing on the Official Google Mobile blog, Product Marketing Manager Alexandra Kenin said, "if you have an ad in an old format that's already uploaded to your account, it will continue to run. From here on out, though, we'll be accepting uploads only in the MMA-compliant formats."