Answers
Why isn't "New FamilySearch" supported in Reunion 10?
We intended to introduce compatibility with "New FamilySearch" in Reunion 10. Although we invested substantial work toward this goal, even well into the beta testing process, we decided that it simply wasn't practical to include these new features in Reunion 10.0, given the ongoing development of the project at the LDS church.
To date (as of May 2012), New FamilySearch is only available to members of the LDS church. It is not yet available to the public; nor has it reached public beta.
New FamilySearch has been in development for years. And it is still evolving. The LDS church has exciting goals for the service. We are part of their developer network and have been apprised of their plans. However the actual technology and interface is still in flux, making it impractical for us to design and develop features compatible with the service.
What was called "New FamilySearch" has been renamed "FamilySearch Family Tree." And this service is NOT "FamilySearch.org" which IS open to the public and provides a great resource of genealogical records.
Reunion 10 provides a new "Search the Web" feature that works with FamilySearch.org, making it easier to search FamilySearch.org for records. However, "FamilySearch.org" is not "New FamilySearch" or the "FamilySearch Family Tree." The changing nomenclature alone provided a big hurdle of confusion for our beta testers.
Until the church finishes developing and building the new model and underlying technology, and finalizes the naming and documentation of the system so that the public, as well as church members, clearly understand what resources are available, it simply isn't feasible for us to integrate our application with what is, to date, a moving target.
As we said, we've already invested substantial work into Reunion 10 connecting with, matching records in, and importing data from, what was called, "New Family Search." So we look forward to the day when we can resume work on this project and bring the features to our users. That's been our intention all along.