Zen UV now works not only in Edit Mode but also in Object mode. The following functions are available in Object Mode: Advanced UV Maps, UV Coverage, Checker Map, Texel Density Checker.
Added Texel Density category. Get, Set, and Check Texel Density of UV Islands.
Updated Checker Map category. Add your own textures, filter existing textures by resolution, square and rectangular formats.
Updated UV Maps category. Now you can work on UV Maps of the selected objects in sync.