New bypass switch. A Kill-Dry switch - to get 100\% wet reverb, and a a presets switch with corresponding mode selector. So you basically have 2 mode knobs to choose 2 different modes - I like the Modulate and Hall, and you can switch back and forth between them.
Still runs on standard Boss type adapter - doesn't run on batteries - no room on the inside. Still works in stereo - though when the Kill Dry is engaged, the signal is in Mono