For those who like the behind-the-scenes stuff, here are 10 early sketches of UI elements/concepts for the new Basecamp.

Early concept for the project blank slate (empty project, no content yet).

Companies and people, take 1 (discarded).

Companies, people, and groups, take 2 (discarded).

Loop-in UI for messages and comments.

Adding/editing a project name.

Create a new project.

No projects yet.

Tabs for people and projects (discarded).

Blank slate for a sheet in a project with no content yet.

Live text document collaboration with presence (not in v1, maybe later).