I finally was able to speak with the advisor that left me the message today. Looks like Tesla decided to honor the original pricing on some select contracts. He couldn't elaborate on what the selection criteria was, but I'm guessing it has a lot to do with how much of a price increase comes from the new pricing. In my case, the initial increase was almost $19K, but after the free powerwall offer and the upsize offer the difference went down to about $10K. Obviously, these offers go away with the original pricing, but I'm going to proceed with the project.
To those that ask how can one trust Tesla after this stunt I say this - I believe that Tesla didn't intentionally bait and switch. After all, they did quite a few installations at the original price before April, but were too slow to realize the real costs of these installations. So, I attribute the wrong pricing to poor management on the executive level of the solar roof product. Musk fired quite a few people from the solar division due to this. I have 2 Tesla cars and I bought my first model S in 2015 and so far my experience with both the products and the service has been great. This experience with the roof contract was an exception, but if they are going to honor the original contract then that's the signal that Tesla is trying to do the right thing when they can.