Writer has long had Master Documents. A master document lets you manage large documents, such as a book with many chapters. One odt per chapter, bundled into a single document via a master odm
LibreOffice 4.4 introduces Master
Document Templates. What that means is that these Master Document Templates can be added to
the Template Manager and from there you can create a new Master Document (odm) based on a Master
Document Template (otm). The new odm of course having the same initial
content as the Template it is based upon.
Thanks to Máirín Duffy (of Red Hat, Inc.) for prompting this feature. Any failures in execution are mine however.