The watch shown here with the newly redesigned metal bracelet is the Luminor GMT 44mm. Panerai redesigned the metal bracelet because the older design was too flashy IMO and drew your attention away from the dial and towards the bracelet. And so the new bracelet has:
vertical brushed finish
polished middle links
tapers from 24mm to 20mm
uses regular screw adjustment rather than the push button bracelet quick set
These changes help bring continuity and balance betwen the bracelet and case, and draws your eye more towards the watch rather than the bracelet.
This new bracelet will not displace the previous version nor the leather or rubber straps. It will be interchangeable so you now have another option to choose from.