Definitely not. Disney management has made clear statements indicating that they believe they have the right number of parks (for now) and will instead be directing any expansion capital allocated to WDW towards improving the parks that they already have.
Look for Disney to search for ways to "work smarter not harder" -- i.e., ways to improve the guest experience by optimizing the use of their available assets, rather than just adding moreandmoreandmore. FastPass has been the strongest of efforts in that regard, but the objective there was to try to get more guests to spend more times at the less popular attractions, shops and restaurants. I suspect Disney is looking for more ways to make that happen.
Don't take it personally, it's only business!