Buying an iPod Shuffle

I'm thinking in buying an iPod Shuffle in Christmas, and i'm thinking in spending more or less 200 dollars in music in iTunes, like buying, two big albuns, four or five smaller albuns and the rest in individual songs. What I want to know if 2 gigabytes of memory are enough for at least 300 hundred songs, and if is Apple going to release another iPod Shuffle until christmas, and what would be the features, memory and price of it. And by the way how do I put music on it, and can I put other things like podcasts and audiobooks?

Thanks if you comment and answer my questions.