We ordered a 3970 during (and just after, long story) the Hershey Show in September, and the ramp door improvement was one of the biggest selling points. Door operation is so easy and sides are no longer attached to the door, as noted above. Set-up of the patio is now very quick, no more pins! The new door is part of the Epic V package. The command center has also gone wireless, and allows all your controls and monitors to be viewed and operated by a smart phone. Really nice features!