Yes, May 15th is the final date. So far everything is looking good and we should be able to meet this date.
Our approach is different. We go beyond content management. Our idea is to create very flexible and easy to extend platform that can be used as a starting point for virtually any web application. When building your application or custom modules, you can take advantage of the built-in features like versioning, workflow, security, multilingual support, navigation, caching, rich user interface and many others.
Sitefinity architecture is entirely based on data provider model. You can easily implement your own data providers to access legacy data or comply with specific scenarios. It also supports multiple data providers within single application. This allows you to share content between sites while having site specific content at the same time that is inaccessible through other sites.
We believe we have some unique features as well like dynamic metadata for content. I hope you will find the waiting is worth it.