Fotodiox just launched a new TOUGH E-Mount Signature Edition 2015. You can already buy it on Amazon US (Click here). Fotodiox writes:
The TOUGH E Mount Signature Edition – now in a limited edition brass finish! We have been overwhelmed by the response we’ve gotten to our mount replacement kit. Replace Sony’s original plastic & metal combo mount, with our solid brass TOUGH E Mount. We’re only doing a limited run of these all-brass versions. Once they’re gone, they’re gone!
The “normal” non signature version costs $10 less and is also available on Amazon US (Click here).