X-Cart 4.1.4 is now available for downloading from your File area along with the upgrade kits that will take you from X-Cart 4.1.0-4.1.3 to 4.1.4.
To access the upgrade patch, log into the Help Desk, go to the 'My Licenses' section, find the license of the X-Cart that you wish to upgrade and click on the 'Get upgrade pack' link.
Changelog between 4.1.3 and 4.1.4 final release attached.
See also:
http://www.x-cart.com/news/x-cart-v4.1.4-released.html