day one patch??

um I downloaded the game like 10 minutes after it was released and was that the day one patch? if not what did it include and do I need to update the game?
plz help

and what about the promised giant sandbox map that said "had all the original maps into one and had some new challenges for you to overcome" what?!

@asherh "Joining alongside 5 maps from the original Spintires comes a new sandbox map, filled with its own challenges for you to tackle"