The appearance of the 'new' Tempest will be virtually the same as the original Tempest.
The reason for the price is that the first 'limited edition' models will be housed in a leather covered fitted case, which is a replica of the old canvas and leather Webley pistol case, and very nice it is too.
It's a pity they won't be available until next year, as they would have made great Xmas presents.