In the interview Mark says:
...we'll have some new styling which is going to be the starting point of another five year view. We've been Human for the last five years and now we're gonna be light oriented.I'm sure Mark is referring to something like the Elementary theme, which has been a hot topic these last few months.
Some people think that interpreting "some new styling" being "the starting point of another five year view" as an entire new GTK / Metacity theme redesign might be a bit of a stretch. As 23meg from the Ubuntuforums.org points out, it can be interpreted as only the starting pieces of a new five-year outlook landing in Lucid as well.
During the Ask Mark session at Ubuntu OpenWeek, Mark was asked about the artwork for Lucid. Back then he replied:
New window decorations, some new icons for the panel indicators, some new styling on boot and login, no new gtk theme.I must admit, I'm really in doubt about what to expect in Lucid. There are no artwork drops secduled for this release, but the User Interface Freeze is just around the corner, so we'll soon know what Lucid Lynx will look like.