Version 26.0.1 is a maintenance release. No new data or locales have been added.
This is an update to CLDR 26 only for the JSON format of the data. Some of the JSON data from CLDR 26 had corrupt identity information, which is fixed in this update. The XML for CLDR 26 remains unchanged. Refer to http://unicode.org/cldr/trac/ticket/8018 for details.