I would not be so sure about that. Many (most) astronomy photos are false color photos from quite different wavelength regions (often several different overlayed ones). So I do expect some fascinating images to come out of jwb as well.
Fascinating, sure, but Hubble has almost six times the frequency range of Webb. In terms of magnification and dust penetration Webb is leagues ahead, but for a given magnification Hubble just sees a wider variety of stuff.
Exactly this. Just google "infrared images of space", it's all false colors but still incredible pictures.