That was a nice surprise. I don't know if they packaged this at the last moment because people were complaining about CoD Vita or what but I like it. To summarize, I opened up Declassified after I got out to my car to find a packaged code inside to download Call of Duty Roads to Victory from PSN. It's a nice little thank you from the crew and the card says it's only good for download "on game launch". I downloaded it but I haven't played it yet.
As far as impressions go, the Call of Duty: Black Ops Declassified game is great but there's just not enough of it. There are only ten missions and they don't even bother to introduce you to the different characters. You just have to remember who people are from Black Ops 1. That being said, the ten missions are repeatable on different difficulties. The game also has some additional modes like time trial obstacle courses, an endless wave of enemies mode named "hostiles", and 4 v 4 multiplayer.
Overall I'd say if you like Call of Duty you'll probably like what there is in this game. It's a nice little taste of what Call of Duty is like on Vita and it's fun while it lasts. People who might get the most out of it are those who have friends that own a Vita and can play multiplayer. Other than that, I'd wait until the price drops a little bit before buying. It's really not worth 50 dollars in it's current state.