Yes, I will definitely be heading to an Apple Store to check it out. I love my big 5.7" Galaxy Note 3 screen but it gets annoying to hold in one hand because you have to slide your hand up and down so much just to reach buttons or the notification bar so I'll check out the 4.7" too. I can't ever imagine myself going back to a screen as small as 3.5-4" though after getting this phone.
I love the customization and openness of Android but I also miss things from iOS too like the beautiful design consistency, the music app, compatibility with iTunes, iMessage, Emojis, the gallery app, and the camera. The Note 3 camera is great outdoors but it's terrible in low light situations and I often have to take multiple pictures to be safe because a lot of pictures will end up blurry. It's also pretty slow and the automatic "Beauty Face" filter is really annoying.
So yes, a larger screen iPhone definitely interests me and is tempting to me. I guess I'll just have to wait until October to make my decision.