docx4j 11.4.10 and 8.3.10 are now available in Maven Central. For downloads, go to https://www.docx4java.org/downloads.html
The immediate driver for these releases is to ensure the namespace corresponding to the w16du is declared when docx4j manipulates a docx containing that prefix (which will be the case for documents edited in Word when the relevant update is pushed by Microsoft). http://schemas.microsoft.com/office/wor ... l/word16du is new ...

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