Here is a list of the new language texts IDs for v5.9 (Since 5.8.1 )
Application - Explorer Panel - ( ExplorerPanel_lang_en.xml )
Settings
S-565
S-800
S-801
S-802
Application - Application - Multi Commander - ( MultiCommander_lang_en.xml )
Commands
C-214
Settings
S-1445
Dialog
D-2612
D-2645
D-2647
D-2648
D-2649
D-2661
D-2662
D-2710
D-2711
D-2715
D-2716
D-2720-2724
D-2730
// Added description field
D-2653
D-2657
D-2658