10.1-inch screen is just no good if your favorite old Android apps haven't been updated to use it. Ideally all devs would tweak their products to properly light up those pixels, but that's not always possible. Google's stepping in, adding another display option on "a near-future release of Honeycomb" that will simply zoom the app to fit the screen. This is separate from the current stretching option, which sometimes look bad or doesn't work. When this mode is enabled the app will be rendered at approximately 320 x 480 and that image blown up to fit. Pretty looking results? Unlikely, but a little Vaseline on the lens can only boost the confidence of these aging apps.
[Thanks to everyone who sent this in]