WWDCIndex now has search.
My cofounder Tom maintains WWDCIndex — an unofficial index of every WWDC session Apple has ever held. That's 3,700+ talks going back to the year 2000, including many that are no longer available on Apples Developer website.
Until now, finding a session about a specific API meant CMD+F through one long page. Now you can just search. Big quality of life improvement if you regularly dig through WWDC history to find talks on specific topics.