You may already have read the latest Kickstarter update: http://www.kickstarter.com/projects/500643708/pro-pinball-timeshock-the-ultra-edition-0/posts/658360
But if you haven't, I'm sorry to say it is highly unlikely that we'll be able to release the game in December as we'd hoped, due to the time it's taking to render the very high resolution final graphics.
Thank you for your support and understanding, we are doing all we can to get this to you as quickly as we can without compromising on quality.