Agot Ck2 6.1 -

If you are looking for specifically "6.1" content, it likely pertains to these releases:

: Allows players to start at various points in history, such as Aegon's Conquest, the Dance of Dragons, or Robert's Rebellion.

: Players can lead noble houses, the Night's Watch, or merchant republics in Essos. Significant Early Versions

: Includes mechanics for dragons, White Walkers, Valyrian steel artifacts, and one-on-one duels.