Dunno who this is and why him working at Apple is a surprise? Can someone give me a clue?

His bio and website didn't make it obvious either.

Oh! I love Omni! Cool.

William "Wil" Jon Shipley (born October 16, 1969) is a Macintosh software developer, best known for co-founding and heading The Omni Group in 1991, where he did consulting work and developed software for the NeXTSTEP operating system, Rhapsody and later Mac OS X.

Any hints about what his position will be?

I miss the "old" macOS software style (design, interaction) and am deeply hopeful a developer with the experience, knowledge, and design skills visible in the original Delicious Monster (not v3) might be a good influence in Apple. But that depends entirely on what he's doing there.

Indeed - talk about an old timer in the Mac ecosystem.

My favorite reply so far: "First job: fixing all the Radar issues you reported."

Ha!

Dunno why I got downvoted for this...