Hello Jacob,
You should be able to access the latest internal build from your site account's > Product Files Download section, option 'Browse all product files'. It should be listed alongside with the rest of the files from the official Kendo UI distribution, i.e. msi installer and zip packages.
Latest internal builds are available to all users with active commercial licenses of Kendo UI, as stated
here.
Best regards,
Sebastian
Telerik
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