In 1996, ortography was reformed (see https://en.wikipedia.org/wiki/German_orthography_reform_of_1996), simplifying some cases, use of ß was reduced ("daß" was changed to "dass", "muß" to "muss"), and foreign words were changed to be written according to german rules (e.g. "Delfin" instead of "Delphin").

ORLY? 1996? boy, time is passing, I'm getting old - 27 years ago! and I'm still stubbornly sticking to ye olde rules.

One of my favorite examples is "aufwendig"

Hell yes, reason for "Bier in Massen trinken" (in Maßen = in moderation, in Massen = galore) :P