Regardless of whether your device features a dedicated Menu button or not, Google has decided to push OEMs in the right direction and are now enabling the action overflow button permanently throughout applications. Previously, some applications wouldn’t show an action overflow button depending on if your device featured a dedicated hardware/on-screen menu button for an options menu, such as certain Samsung devices like the Galaxy S4 and Galaxy Note 3.
Moving forward, there will now always be one within an app for easy access, according to a Git repository change by Google.
We are hoping that this will be a wake up call to OEMs, who continue to use Menu buttons and opt not to use onscreen keys. Sure, it’s nice to have device differentiation, but there are ways to do that besides using permanent Menu keys.