Serious Question about Swain. Requesting a lore archivist.

So I have never played swain, nor bother to check out his lore. His new kit seems vastly different than his old kit.

My question to anyone who is a lore maniac, or who is well informed about swain enough to answer, How is his new lore differn't than his old lore, and how does his new kit fit in with his old theme vs his new theme.

These are genuine questions, and I would be grateful for anyone to share there knowledge on this for me.