I guess you’re kinda late to the party, but we have Bigby Presents: Glory of the Giants. It has awesome lore and cool stat blocks for giants in a book al about them.Giants are, traditionally, pretty boring enemy types. they are big, and hit hard and can take a lot of punishment. Hopefully they give them pretty interesting options, from flinging PCs across the battlefield to thunderwave clapping ands so on.
I guess the giants in the MM will see some changes too.