It is actually unchanged - it is White himself who has changed. There are small changes, such as arriving by car and "sneaking up" on the lake rather than making a big entrance. And there are motorboats now with the noise that disturbs the stillness. But what's important is that when he was a child it was all new and he rose early to drink it all in - and now he detests even the small changes that have occurred. He is not the kid who sees the world with fresh eyes any longer.