Disclosure: I worked on the original MN9 Kickstarter campaign.
FWIW, it's not Day One DLC (the full update spells this out really clearly a couple places, though if you just saw the OT I can see how you might think this). And it's basically saying that all pre-order money (slacker backers) from this point through the end of the year will go towards making this DLC, if they get enough to make it -- and if they do, the 80K backers who already funded the main game will get it for free.
They are showing their costs (which are over what they are saying they need in pre-order money) and seemingly being totally open about the entire process -- I'm not sure how this can be construed as unethical just because the game isn't out yet, unless you think taking money for pre-orders is unethical.
I do know some people personally don't like hearing about DLC before a game is out yet, for any reason, which I can certainly understand. The update makes it sound like (and I know from working on other games) they are probably talking about it now cause of how some parts of game dev finish before others.
This should be in the OP, but people will just ignore your post and make drive-by hate comments because thisisneogaf.gif and they need to vent their frustation.
Said that, the character design is awful.