I was holding off on buying a 4th generation for this release, so now I just need to see some reviews before I make the plunge. I'm currently running a 3rd generation AppleTV and sometimes the AirPlay streaming (5GHz 'n' network) seems like a joke.
If there isn't much of an improvement I'm happy to continue suffering without shelling out for a new device, but if the newly launched app does a much better job, that changes everything!