What does the new logo of Ubuntu GNOME mean?

The new release of Ubuntu GNOME brings a new logo. What does this logo mean? And what is the mainly reason for changing it?

This one?

The new logo is a combination of the letters U and G.

I found a topic on the ubuntu gnome artwork mailing list pointing to the project page:

1. the shape forms “uG”, thus Ubuntu GNOME
2. “u” is the front liner of the branding in the Ubuntu family font and of the official brand; in a philosophical approach a pointer towards humanity (as in unity)
3. the symbol itself, comprised of two pieces formed together, expresses the same idea
4. both symbols are closely related, placed, and in their union accomplish their purpose of expressing both the philosophical and material aspects of unity via Gestalt