Nothing yet. Graham Cobb is really active these days on GPE, but it's only moving so fast. Each new feature seems to have to go through some kind of lengthy political process before getting implemented.

I see a PIM as being creative ways to view information, not just contain it.

Consider just a datebook: A 3-day view is one example. How about a month view with little symbols or icons so you can see what the event - or pattern of events - are at a glance? Colors and fonts for certain categories, or specific events. A filter on events - perhaps even by icon, or regular expressions for that matter? Task items that are either loosely or rigidly connected with a date. Week numbering. Unique alarm sounds per event (ok this isn't viewing an item, but oh so useful).

I know these are fairly big jobs to implement, but every serious PIM has them. These features can be really liberating to a power user.

Will we ever see all these? Yes, but I'm thinking it's going to take a really long period of time.