I saw that those who buy Deadfire right now will get a free copy of Wasteland 2. I backed Deadfire on Fig and redeemed it via GoG. Is there any way for me to also get the free copy of Wasteland 2? It doesn't look like it, but it seems a bit lame that backing the game in advance means I'm missing out on the free game that I'd have gotten if I'd just waited to buy it until release day.

I have the same problem.

I have backed the game on fig, now I got the backer edition of PoE2 but I do not know how to get wasteland2.
I would consider backing the game at the start of the fig campaingn as " pre order as early as possible".

As I see it you were given two options: be a backer or a beggar. And you chose first.

This deal is available exclusively for GOG customers and only if you buy Pillars of Eternity II: Deadfire from GOG directly.

Purchases outside of GOG means - no Wasteland 2 as an extra.