Though the site has since been scrubbed, for a brief time this morning you could get a glimpse of the Moto X+1 branding through Motorola's own website. The Moto Maker service, which let users craft their own custom Moto X exposed the codename of the Moto X in the URL: "FLEXR1". But if you changed that URL to read "FLEXR2", a logical codename for a Moto X sequel, then you were presented with the branding of "Moto X+1".
Most everything else about the page was broken, the the Moto X+1 name was rather deliberately there in both the page and the page title. You certainly couldn't customize yourself a Moto X+1, though the upcoming smartphone is rumored to include wood and leather back options.
Or maybe all we were looking at here was a placeholder that Motorola didn't think people would see. But people always find these things. You can't stop the signal, Moto.