I was wondering about this also. When clicking on the "Award Travel" link under the new fee structure chart, and select "changing flights and upgrade awards", the verbiage still seems to imply a date change only would not result in a change fee:
Changes to the origin or destination or airline
- For MileSAAver awards, origin or destination changes to the itinerary will incur a change fee of $150, even when retaining the same award type
- For awards involving travel on other airlines, origin or destination changes or changes to the airline(s) in the itinerary will incur a change fee of $150, even when retaining the same award type
- For AAnytime awards, origin or destination change fees are waived only when retaining the same award type
- You may not make changes to origin, destination or airline for an itinerary that includes a Web Special award. While you can cancel and reinstate your miles, fees may apply
- The change fee will be waived for Executive Platinum members using miles from their account
-