If you're still seeing last week's comic, you may need to hit the refresh button. I've been having some minor issues recently regarding new comics not automatically showing up on some browsers. This seems to mainly effect Firefox. The old comic on the front page seems to stick in cache longer than it should. Chrome browsers seem to show the new page just fine. I haven't tested any other browsers yet. Regardless, just a simple refresh of the page should show up the new page if you can't see it. That goes for the preview for the new voting incentive as well. I'll look into figuring out a way to stop Firefox from still showing the old comic upon updating in the future.