It's 'newer' NOT 'new'!
It's been around for a while...
Look for it in the 'Plugins Index' lists...
'LatticeMaker' works on premade meshes - it has a sibling in the Extrusion Tools tool 'EEbyRailsToLattice' that takes curves and makes the 'mesh-grid', and if option is selected it also frames/panes it...
G