Yes, in more ways than one. The first great improvement is that they have separated the scanner interface from the program itself. Now I can scan and work on my receipts at the same time.
Also, as other have also said, I never scan one receipt at one time. This way I can scan all my receipts and *then* modify them (I almost always crop them down a bit to help save disk space). With v3, I couldn't do that.
