For songs at least 2 minutes long, the preview has been extended from 30 seconds to 90 seconds...Apple has began to add some extended previews to the iTunes store.
If you check out all of the current Top Albums on iTunes, many of these have 90 second previews...but outside of iTunes top sellers, many still have only 30 seconds previews.
Apple has yet to issue a press release on this change...
Is 90 second previews going to drive you to buy more songs? Or less?