"First, let me introduce you to yourself" (Beware RotE Spoilers)

[joost]

The golden fool trilogy is a must-read before the new books, because they tell the story of Fitz and the fool between the end of the Farseer books and the beginning of the new books. The idea for willful princess is actually based on a plot line from the Golden fool trilogy.

The liveship traders aren't absolutely necessary to read before the Golden fool books, but you'll miss quite a lot of backstory if you skip those.

So I suggest the following reading order:
- Farseer
- Liveship traders
- Golden fool

Since I have no idea what the new story will bring, I'm leaving out the Rainwild chronicles. They're the continuation of the Liveship traders, although there are some references to both the Farseer trilogy and the Golden fool trilogy.