The Tamron 10-24mm f/3.5-4.5 Di II VC HLD lens is more than an update of the older version it is a complete redesign in almost every way. Its overall design reminds me of the new Sigma Art lenses with its smooth clean lines and all black body construction. Something I’m happy to see Tamron adopt moving forward.
I’ve owned several Tamron lenses and currently use the 24-70mm f/2.8 VC as my go to for full frame bodies. A quick comparison of build quality shows the 10-24mm is not nearly as robust and heavy duty feeling as the 24-70mm. However at almost a third the cost it stands way above what I would expect for something in that price range with several improvements over the 24-70mm. As of this writing it is available for both Canon and Nikon mounts and is designed to work with APS-C/DX cameras. The Canon version does have an EF mount instead of the typical EF-S found on Canon APS-C lenses. So it could be used on a full frame camera at its upper range starting around 13-14mm. Still making it quite a wide option.