Nokia keeps promising that its first Windows Phone 7 device will be shipping by the end of the year and, though the company is cutting it close, we may actually see that vow fulfilled. It's already been caught in spy shots a few times over, but now marketing materials for the Nokia 800 have started to leak out. With Nokia World only a few weeks away, it makes sense that the Finnish manufacturer would want a campaign ready to roll. The ads for what was formerly known only as Sea Ray talk up WP7's social features, with one declaring "Take, tag, sort and share. All in a flash." It's hardly a confirmation, but this is as good as sign as we've seen that Nokia will actually deliver us a little slice of Mango before it's time to buy a new calendar.