LexEVS 6.4.1.1 was released in November, 2016.
Full details are available on the LexEVS 6.4.1.1 page.
LexEVS 6.4.1.1 features include:
LexEVS 6.4.1.1 provides a fix for a failing query against the Metathesaurus.
Also included in this package: