Wood mechanics has been changed slightly.
As you know, lumber mills reduce the amount of gold mined by peasants.
That reducing is now capped at 75 gold per peasant:
The cost of lumber mills is also changed, so you can build 5+ lumber mills and start to gain a lot of wood. If you used to build only one lumber mill the game won't change much. And you can still play without wood to get maximum gold output.
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The British special has been improved. They still get +10 wood and +10 faith from forester's huts, but also theirs lumber mills gold penalty is capped at 50 gold per peasant.