James Tanner, in his "Genealogy's Star" blog today, tells us:
Family Tree is available through a link on the FamilySearch.org website, but you have to initiate the link before it will appear. The instructions for gaining access to the program on a PDF file called Gaining Access to the FamilySearch Family Tree (pdf). Here are the instructions:
1. Go to http://www.familysearch.org/invite/familytree_tab.
2. Enter the required information in the fields provided.
Important: When you enter your user name and password, enter the same user name and password that you use on familysearch.org and new.familysearch.org. This lets you see your FamilySearch Family Tree and all of your changes as they appear in new.familysearch.org in the FamilySearch Family Tree.
3. Click Register.
The FamilySearch Family Tree appears. You are in the main position on the screen. To get to the FamilySearch Family Tree from now on, go to www.familysearch.org, and sign in. The link to the Family Tree appears in the upper-left corner of the screen, next to the FamilySearch logo.