have there been any PDF art leaked for the wave 1 ships ? I would like to see the cards to do some math

You can find most/all of the revealed cards in the Wave 1 sections of this Armada wiki, and most/all of the revealed stuff has also already made it into Fab's Fleet Generator.

Most of the cards have been shown already. Should be in the wave 1 news article. Or use Fab's fleet generator.