Marc Newson is a friend of Jony Ive and a great talent. This is a big addition to Apple's design team.
Here's a video on The Tech Block of Marc Newson talking about his watch designs.
The Marc Newson Ltd website has a nice gallery of his work.
And in case you missed it back in November, here's the Charlie Rose show where Jony and Marc discuss their (Red) collaboration at Sotheby's.