Sounds like the successor will be a woman from the wording in the letter. First Mr. Buffett uses "he" and mentions that it's used to avoid strange sentences. When describing the ideal candidate it switches to "he or she" and and when talking about the fact that they have a successor it switches to "person". That pattern is pretty typical when talking about women but not wanting to give it away from my experience of p…
Otherwise, going to be a very interesting thing to watch. Mr. Buffet's love of economic moats will likely help ensure that his successor will not be in a Ballmer-type position.