Google is expected to officially unveil the Nexus 5 any day now. (Technically it already has.) But one Canadian carrier has apparently grown tired of waiting. Wind Mobile today launched a pre-registration page for the upcoming Android flagship, describing it as the smart, new phone made to capture the moments that matter. The page also reveals some key specifications for the latest Nexus handset. The internals listed here largely match up with what weve seen from previous leaks and FCC filings, so theres not much in the way of surprises. According to Wind, the Nexus 5 will feature a 4. …