Here is more info on these latest pics:

The new up-close view of the crater reveals better-defined shapes of the brightest, central spot and features on the crater floor.

Members of the Dawn science team note the rim of the crater is almost vertical in some places, where it rises steeply for one mile (2 km).

And as more data comes in they will be making a 3D model.  Many people think it is ice or salt that is reflecting and others think it may be something else.

And below is a related video that tours the spots and other strange formations!

Take a tour of weird Ceres! Visit a 2-mile-deep crater and a 4-mile-tall mountain in the video narrated by mission director Marc Rayman. Get your red/blue glasses ready for the finale – a global view of the dwarf planet in 3D.

All of the data was generated from NASA’s Dawn spacecraft, currently in orbit around Ceres.

thanks to sci-news.com for the great info

thanks to NASA for the pic