Am i right this is a faster processor version of Arduino
No. Completely different kind of chip. And, it's not necessarily faster. It is a 32 bit processor, instead of an 8 bit processor, though.
that will allow you to use visual studio to program the board ?
Let you? It requires that you use Visual Studio.
is this of more use to a software devloper that uses a windows interface ?
Are you a software developer that uses a windows interface? The only thing I use a windows interface for is to see if it is raining outside.
There are no windows interfaces involved in programming the netduino.