When launching a new product, what sales assets are a must have to make the launch a success?

First the failure mode (for contrast): PMM does a kick ass job with product decks and slicks. There is a training session where some people seem to be paying attention, but most people are distracted

Internal training materials/deck Education should always be a big part of launching the product. The first thing you need to accomplish is getting the sales team to actually care about whatever it is

This will vary depending on how important a given product is as well as its degree of complexity, but for a decently robust feature/product I think you'd want some of the following as a minimum. [Int

You need to have a slide on the new product and how it fits to your overall story. In cases where the product is a huge release, I would include a one pager. Included in all of the assets are talking

Product one sheets/handouts/leave behinds, strategy/copy for sales outreach email campaigns, internal one-sheets for sales calls/scripts, a demo video, buyer's guide, case studies or testimonials if p

I agree with everything Courtney wrote and would add that the sales materials need to train the sales team on a compelling event that will drive interest in the product. This could be externally drive

The ones that compel a buyer to act. Unless you are a customer of your own product, you can't determine what those things are. You have to learn them from buyers in your target market. 

That is best answered by buyers and not by sales people. Go talk to potential buyers and find out what they need to help them make a buying decision. If you don't have time to do that, make sure you