A lot of breeders now will only give you the contract, vaccination and microchip stuff until they receive proof of neutering from your vet. This is just to make sure that pet quality kittens are not being bred from.
If you get all the paperwork you should come home with:
Contract
Kitten Care Sheet
Receipt
Pedigree
Microchip documents
Certificate of neutering/spaying (for your vet to fill in and you then send it back to them once the kitten has been neutered- not all breeders do this)
Registration documents (if kitten is registered with FIFe this will all be on the certified pedigree)
6 weeks Petplan Insurance paperwork (not all breeders do this)
Vet Health Certificate (not all breeders do this)
Kitten Pack (contents vary depending on the breeder but food, booklets, bowls, various toys, blanket, bag of litter etc)