Hi,
Jeff Walker is a good guy, but of course he didn't come close to inventing the pre-launch or the launch. Concert goers are very familiar with winning concern tickets by calling into radio stations or winning vip treatment, or back stage passes, lunch with a star, the list goes on.

Likewise, if you look at "professional wrestling," the whole fitting before the fight is just a pre-launch. PT Barnum was doing this for circus goers over 100 years earlier. And I can only imagine the pre-launch of the Romans for the Gladiator Fights.

In more recent history, every type of business from Retail Stores to Real Estate companies have used multiple pre-launch techniques. Believe me, tourists are bombarded with Condo deals when they visit Disney Land.

Okay, more to your pre-launch campaign for SaaS. Simply, come up with a taste of what you have, ask a serious question and answer it. At the end of the end of the first "answer and solution" set the potential client up with another problem that is very familiar to them. Tell them that you have the answer. Follow this technique several time. I believe Jeff does repetition this 2 or 3 times, but a famous golfer has sent me literally dozens of how to videos in order for me to take the bait.

You might think that giving the answer to a solution makes your product less valuable and your opinion less valuable. If you think that, you would be wrong. Heck, look at what I have given out in this answer. My experience is if you give you will receive. That is if you know what to give, how much to give, and how to receive.

I am not trying to sell you on calling me. Really, I am pretty busy with my businesses and consulting. However, I need more info before I could have a greater impact in helping you.
Most solutions involved this: Ask, Ask, Ask, then Ask again.
Bonus:
Here is $10,000 worth of information for free and in a nutshell.
Concentrate on the 3 M's. There are actually 7, but 3 will do for now. These are Market, Message, and Media. They come in that order.
Who is your target market (customer, clients, buyers, users, etc.)?
Tailor your laser focused message for this target market.
What is the best media mix to get your message to that market?
Here's what you do...first, make it an offer that is so incredible that they cannot resist. Secondly, do all the work for them. Make it so easy to make the purchase now that they can do it virtually without effort. Thirdly, give them an incentive to act right now. Fourthly, offer an almost unbelievable guarantee. Fifth, offer a bonus for acting now. There are many other incredible steps, but these steps should help the novice to the professional sell anything.
Whether you are selling B2B or B2C, you have to focus on selling to only one person. You can actually sell to one person at a time while selling to millions at a time. They are one and the same. Don't get off track, what we call digital marketing selling is just selling in print. And that has not changed since Cluade Hopkins wrote "Scientific Advertising." Really long before he wrote the book.
The secret to success: I have had the pleasure of knowing and working with some of the biggest names in business, celebrities, actors, entrepreneurs, business people, and companies from startup to billion dollar operations. The number one reason for their success is doing what they know and love while doing it in new, creative, and innovative ways.
Ask, Ask, Ask. Have thick skin and learn from each "mistake." In a short while, the market will tell you what you need to do and who and what you need to ask. But get started now even if that just means asking a contact on LinkedIn.
While you are thinking, think big and think of something at least 1% better, newer, or different. And being cheaper is not a winning strategy.
Make decisions quickly and change decisions slowly..unless you are actually going off a cliff.
Remember these two 11 letter words...persistence and consistency. They are two of the most important tools ever invented.
Even better yet, remember my 411 Rule of Achievement – It consists of (4) eleven letter words for super achievement (also an 11 letter word). Here it is, my 411 Rule of Super Achievement:

Persistence and
Consistency can change even the smallest
Possibility into a big time
Probability

Persistence + Consistency =
Possibility  Probability

By the way, I get a lot of people asking me if I can take phone calls for free (a free sample). Sorry, I can’t. I respect Clarity.fm and what they are trying to accomplish.
Treat everybody you talk to and everybody you meet (including yourself) like each is your number one million dollar customer.
Remember this for most people who really want to achieve a dream:
First: Your dreams are important and those who don’t support and believe in your dreams either don’t understand your desire and ambition or they have some other reason (many times reasons they themselves don’t understand) for not wanting you to spend the time and effort necessary to achieve your dreams.
Secondly: If you haven’t achieved your dreams and goals so far, it is not your fault. I know that this goes against what you usually hear, but it is true. Stop blaming yourself. You have a whole world of obstacles that are truly the blame. You only need to figure out how to go over, go under, go through, go around, or go with these obstacles in the direction of your dreams.
Thirdly: Fear is normal, but don’t give into it. Use it to motivate you and guide you.
Fourth: You are right; there are probably some people who don’t want you to succeed.
Fifth: Keep this in mind, there are people competing to get their first, do more, have more, invent what you are considering inventing, or simply trying to win. Believing in yourself and what you are doing is part of a strong recipe for winning over your competition.

Best of luck,
Take massive action and never give up.
Michael
Michael Irvin, MBA, RN

PS – Many people have “Upvoted” my answers. Thanks to those who do this. I really appreciate it.

I would suggest a few things before going live.

Create a pre-launch page. (Use LaunchRock)
Build your list from ground up. (Start blogging)
Integrate a referral program like Trevolta did. Make them share your voice via social media to get ahead in the list of invitees for the product launch.
Create a pre-launch video.
List your product on Betalist and other similar websites to get beta testers.
List your product on ProductHunt, Hackernews, Reddit etc.
Create a press kit so journalists can find about who your are and what you do to create a story.

Jeff Walker's "Product Launch Formula" is worth every penny.