The Norma is of modular construction and you can easily upgrade to 5x7 and 8x10 by buying a bigger Norma/F/F2/P/P2 back standard and a larger bellows, or a Norma format changing kit. If you want to go bigger than 8x10 you can do that as well: http://www.glennview.com/sinar.htm

As others have told you it is a very nice camera, I have one with 4x5 and 5x7 standards and I see no reason to “upgrade” to a more modern construction.