Is it worth it over the older 24-70mm f/2.8G?

It adds Vibration Reduction and an electromagnetic diaphragm, which the G version lacks. If you shoot handheld in low light or in bursts, those are real gains. The G is smaller and lighter.

Does the VR work on all Nikon DSLRs?

VR works on Nikon bodies that support lens-based stabilization, which covers the full-frame DSLRs this lens is built for. On a tripod, switch VR off as Nikon advises.

Will it fit a DX-format Nikon body?

Yes, it mounts on DX bodies, where it behaves like a 36-105mm equivalent. It is large and heavy on a small DX camera.

Is it weather sealed?

Nikon seals the barrel against dust and moisture, and the front element has a fluorine coating. It is not designed for submersion.

What comes in the box?

Nikon ships it with front and rear caps, a lens hood and a soft case. Check the specific listing for what the seller includes.

How does it compare with third-party 24-70mm f/2.8 zooms?

Third-party options are usually lighter and less costly. The Nikon offers native AF behavior, sealing and consistent quality control with Nikon bodies.