The Gallery Edition game does not appear in the current Catan.com ludography, but Board Game Geek says:

This game uses a rectangular board that is correctly shown on the box itself (unlike the earlier "Simply Catan"). One great feature of the board is the inclusion of scoring numbers on the frame to track player progresss, as well as circular score markers in each colour.

A noticble change in this version, that would be carried forward in future Family Editions, is that the numbers are now printed on the hexes. While regular Catan players would be upset this reduces customisation, these unexpandable games were always about simplicity and ease of set-up. Printed numbers on double sided hex strips still means games can vary, but the set up time is a fraction of a proper Catan game. The harbour positions are fixed.

The playing pieces are the traditional wooden Catan shape, but made from a good quality plastic material.