So what could this thing actually be? I have some doubts TBS did all the (reverse) engineering themselves. But it's likely they already have some experience constructing 303 clones, as TBS share some history with MAM (builder of the MB33). In case they really want to sell those units for 1000 bucks I don't think things will work out for them. For 300,- you can get a x0x kit, for about 500,- you can buy prebuild x0xes and if you put a bit more money into it, you can get a cool case too (like the alumium one at Christian's x0xsh0p). Also, all the die-hard-303-fans have already gotten themselves a either a x0x or a 303.
just my 2 cents
So let's lean back, grab some popcorn and wait what will happen.