According to Google's clunky Japanese translation: "DOT SWITCH", the app to control a TV or PC, such as participating in "the other side of the screen." Screen for screen for viewing the program and (= TV), participating (terminal = tablets, smart phones, such as a PC) enjoy everyone together. Take advantage of, "DOT SWITCH" apps "MAKE TV" special live show on March 6, 2012".
What we make out of this incoherent translation is that the "MAKE TV" event will focus on how you can share stuff with and control your Sony TV via your Xperia smartphone, computer or tablet of the same brand, and vice versa across the "four screens".
We should know more fairly soon, but it seems that Sony has some big plans to suck you into its gadgets, gaming and entertainment universe, and Dot Switch might be just the start of it all.