Gog has no incremental updater for the expansion. You have to download the whole 5gb wm1 and wm2 again.

 

To check on what versionnumber in the gog counting you are, there is a file named “gameinfo” in the main Pillars of Eternity folder which contains that number. Thats also the place where the incremental basegame patche will look to decide if it can run.

This place seems as good a place as any to ask this: since I don't see a separate pinned thread about the next patch, when can we expect it roughly? And can it (please) include the Withdraw spell fix?