On the match interface, it is noted that there is an X match, however to see the size of the segments, one must go to the Chromosome Browser. Currently, in the Download All Matches to Excel option in the Chromosome Browser, the X chromosome data appears as Chromosome 98.
Thank you, Family Tree DNA for the New Year's gift!
The following are the release notes directly from FTDNA:
This week’s big release is X-Chromosome matching. It has been fully integrated it into Family Finder matching.
Here is the menu link to the Family Finder Matches menu.
On the Family Finder Matches page, there is a filter to show only X-Matches.
Next, like other Family Finder Matches you can expand the advanced bar for a match and click to add the match to the Compare in Chromosome Browser list.
Next we can also go right to the Chromosome Browser.
Here are three immediate relatives. The first two share X-Chromosome DNA. The third (green) one does not.