Doubt we will see the Nexus Gem before Q1 2014. Just like I doubt we will see an iWatch before then. I think Apple and Google are doing their homework and ensuring things are done right before bringing it to market. Or maybe they are watching the mistakes Sony and Samsung are making? Who knows. I will be surprised if we see anything prior to March of next year.
Some images of renderings of 'possible' Nexus Gem's.