Actor Robin Williams' daughter, Zelda Williams, will be doing "something extra special" at E3 2014 next month, she announced on Twitter today. "More details soon!" she teased. Whatever her involvement with the show is, it's going to be surprising. "I'm going to guarantee you it's not what you think," she said.

Zelda Williams--named after the famous fictional princess--and her father Robin Williams have been featured in Nintendo marketing material before. It's likely that she'll factor in to Nintendo's E3 2014 plans in some way, perhaps to talk about the upcoming Zelda game for Wii U.

Nintendo is not holding a traditional press conference at E3 next month, though the company will host a special video event--a "Nintendo Digital Event"--on Tuesday, June 10 at 9 a.m. PDT. This program will bring news about games coming to Nintendo platforms in 2014 and beyond.