No Activity Log after all, by the looks of it. I guess it will be in Parental Controls if it's in at all, which is unfortunate; you'd think the system would track that kind of thing internally when offline.
The introductory tutorial experience looks great: simple and effective at reminding new users of all three usage modes. Also, it looks as though overscan correction is in (screen size adjustment), which is good news as the Wii U took forever to patch that into the system.
To early to tell - a day 1 update is pretty a given and could add some other apps like activity log.