We just got our first order of the new Rocktron Banshee 2 Amplified Talkbox in stock. From an effect stand point the Banshee 2 is the same the original, but the Banshee 2 gives a couple of very cool added features not found on the original version.
First, the Banshee 2 gives you the ability to let the guitar signal feed your amplifier at the same time that the talkbox effect is turned on! This way you get your normal guitar signal through your amp while the talkbox effect runs through a mic (and your sound system).
Second, the Banshee 2 has an effects loop which lets you add other effects into the talkbox signal path, or through your guitar signal path at the same time.