Comment 116 for bug 682788

@pedro

The M button is for demonstration. The devs could use it because is small and non intrusive, but It could be changed to say "menu" or be the name of the app too, if they think is better.

However, you should note, that this is not the same as a "non persistent" dropdown menu button like firefox or opera.

As from the feedback in the comments, a horizontal, on-demand and persistent solution would work better for a number of apps (specially productivity), than the vertical kde appmenu. You toggle it when needed.

For predictability the global menu is also available, as suggested in comment #60 (which also has a patch that seems to implements about 60 or 70% of the design).

So this is half done and looks like is the current solution that has the most characteristics users were asking for.