New iTunes Store Share Button?

Maybe I just never noticed it before, but yesterday, I spotted a sharing button on artist pages in the iTunes Store. It looks like this:

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It’s at the top-right of the page, and it’s tiny. Click it, and you can choose Copy Link, Share on Twitter, Share on Facebook or Alert Me.

This only shows on artist pages, since you get similar functions by clicking the arrow button next to an item’s price. But I’ve never noticed this before. Is it new, or did I just miss it?