Hi Bryan,
sadly I have none of the old ones. But Michael, the Chessguru, has them. So if I see him the next time, I will take the King with me, then we can compare.
It is good news that the old devices will be equipped with the new technology in the future.
I'm currently waiting for a detailed description of what's new and improved. Thomas Karkosch had already told me on the phone in May, but I forgot half of it in the meantime.
As soon as I have it, I'll write this.
Regards,
Sascha