I can at least partially confirm this using my Apple Magic Trackpad. Using a 3 finger tap followed by a 3 finger hold, I get the window switcher to appear on top of the lock screen. I can then drag my fingers to cycle through the windows but I haven't yet been able to get any windows to appear on top of the lock screen
I can at least partially confirm this using my Apple Magic Trackpad. Using a 3 finger tap followed by a 3 finger hold, I get the window switcher to appear on top of the lock screen. I can then drag my fingers to cycle through the windows but I haven't yet been able to get any windows to appear on top of the lock screen