The Google Nexus version of the Xperia Z is speculated to run Android 4.2.2 Jelly Bean, a step up from the phone's current Android 4.1 version.
Google could also use the water-resistant and dustproof phone as a way to demo its expected Android 4.3 OS release, but that remains speculation.
Pure price to pay
The Sony Xperia Z Google Nexus, if the report is accurate, will cost $599 (about UK£393, AU$621) in the Google Play Store after it is announced in July.
While that's a steep price, it won't have a two-year carrier contract attached to it, just like previous Nexus phones.
Sony and Google have not responded to TechRadar's request for a comment on the as-it-stands unconfirmed Nexus version of the Sony Xperia Z, but we will update this story if when the companies get back to us.
- Check out the best apps for the Sony Xperia Z
Sign up to receive daily breaking news, reviews, opinion, analysis, deals and more from the world of tech.