Was trying to test out your new shortcut menu / command pallette on the mac app by the use of the suggested ALT+W shortcut, which would be OPT+W on mac? However when i invoke this shortcut all I get is the ∑ symbol instead 
Is there any way this could be re-mapped to something more memorable CMD+P maybe
Some features require the beta version of the app which you can download here
@rodolfo I have the beta, also on Mac and not able to open the command palette using any combination of keys I can think of. any ideas?
Beta on the web or beta mac app? On the web it should work unlesss there happens to be a conflict with a browser keyboard shortcut. And on the desktop it will only work if you have the beta version of the app which is available here - Workflowy Downloads