The dictionaries installer DicOOo has been released under version

Dictionaries are now automatically activated at installation time
and will be available for use just after restarting OOo. There is no more
need to deal with Tools > Options > Linguistic settings

The update will be prompted on the next use of your DicOOo which is still
available in File > Wizards > Install new dictionnaries

(Post originally written by Laurent Godard on the old Nuxeo blogs.)