What do braces after C# new statement do?

Question

Given the code below, what is the difference between the way position0 is initialized and the way position1 is initialized? Are they equivalent?

Answer 1

Object and collection initializers, used to initialize fields on an object.

http://msdn.microsoft.com/en-us/library/bb384062.aspx

They produce nearly equivalent IL. Jon Skeet has the answer on what is really going on.