My guess the the 205 is the 170 that was announced at NAB. If it is not on Panasonic's site it does exist (at least in my mind). The only thing that comes up in a google search are old forums or resellers that are a bit on the shady side.
This is a version of the HVX200A for some other country. This means that if you were a US buyer, it would not have the P2 Card, nor the HVX-Book by Barry Green nor a US Warranty. I do not reccall which country has this number, but keep in mind when the price is too good to be true, it generally is.
Jan Crittenden Livingston
Product Manager, HPX500, HVX200, DVX100
Panasonic Broadcast & TV Systems