Some-one on XDA-Developers appears to have purchased an LG Fantasy from a tester, and are trying to sell it on. To prove he had the handset he uploaded a video.
The video is of terrible quality, but confirms that the handset does have NFC, making it a first for Windows Phone.
He claims the handset will go on sale in July, making it possible we are seeing one of the first Tango handsets.
See the thread here.
Thanks Martin for the tip.