In late 2017, Thomas Wooden Railway was redesigned into Thomas Wood, using FSC approved premium beech wood. Items were redesigned in a new scale with details printed on exposed wood, described as a "contemporary" design which "highlights the warmth of wood". The line also features an emphasis on poseable human and animal figures, which can be placed in items such as passenger coaches, cargo cars, and road vehicles. The track system uses a "kid-friendly" design with two way connectors and a standard length, with no specialty pieces. Adapters are included with sets and track packs to connect Wood track to Wooden Railway track.
The range was first exclusively released to Toys "R" Us in the US in September 2017 and Japan in December, with a larger worldwide release in 2018. A second assortment of products due for release in Summer 2018 was cancelled due to the line being reworked for the next year. In 2019, products will forgo the "exposed wood" look and vehicles and destinations will have details printed on painted wood, with many products of the summer 2018 range being released in this new timeframe.