The Send features to send an embroidery design directly to the screen of certain connected embroidery machines have been improved. A number of minor issues have been resolved. Full details are also included in the 9.51 Readme, which will be installed with the update.
If you already have 5D™ Machine Communications or 5D™ Embroidery System installed then you are advised to install the 5D™ 9.51 via Smart Update.