Have you updated your home++ app?
While on your Home screen press menu>preferences>power strip preferences> button preferences and then select screen switcher. It will add a icon to the strip on your home screen.
The other way is to long press on an empty spot of your screen and there is a new option for screens.
I noticed that I had to get rid of a couple of buttons at the bottom before the screen switcher button would show up.
With Home++ and 2.0.1, when I press and hold the Menu button, it says "Starting screen switcher", then the screens show up in the center of the screen.
Up to five screen in 2.1? Cool. Too chicken to root and try it now.
I think it appears there's some confusion about the accessing the recent programs switcher. You don't need home++ or 2.1, all you need to do is long press the home button and it'll pop up a box with your last six active applications.