Fastpass return times being enforced

Not sure how many of us are aware of this, but it seems that WDW has started enforcing the 1 hour window for Fastpass return times.  This story from USA Today back in March goes into the details.  Some of us assumed you could always return anytime after the earliest return time, but apparently not any more.  The wording implies that this is only a WDW thing, not DLR. 

"Walt Disney World is now enforcing both the beginning and end times, allowing guests holding a (FastPass) to only return during the one-hour window stated on the slip.