I doubt it is anything other than the relationship between the Visa Network and a bank like Chase issuing a Visa card. Visa aren't going to waste their time cutting special arrangements for such small players.
The reason I ask is that every previous attempt -- of which I am aware -- of affiliating a BTC-denominated payment card with a major payment processor, for the US market, has failed. Further, previous ones seemed to gravitate to MasterCard rather than Visa.
One might think that there is a high chance of this one failing as well, unless some of the principals involved have very tight relationships with principals at Visa.
Is this legit? Not enough info has yet been provided.