all things Harry Potter

ここのall things Harry Potterという言い回しが気になりました。意味的にはあとにあるThe Pottermore siteということなのですが、all things~はなんかのもじりでしょうか。GPくん、どうぞ。（Sugiuchi）
NEW YORK —
J.K. Rowling’s long-awaited website for all things Harry Potter will be open for business in early April.

The Pottermore site was announced last year, with a scheduled launch in October. But a statement posted on the site this week says testing was extended after feedback from early users made it “clear that our original platform wouldn’t be suitable when millions more users came on to the site.”

The site is supposed to offer e-book editions of the seven Potter novels, but Rowling spokesman Mark Hutchinson said Thursday that the sale date for e-books had not been confirmed.

Rowling for years had resisted making her work available in digital form.

2012 Associated Press.