What is upt?

UPT stands for Uncorrected Proofs or Advance Reader Copies, which are pre-publication versions of a book that are sometimes sent to reviewers, booksellers, and other industry professionals for promotional purposes. UPTs are typically printed in limited quantities and may contain errors or have not gone through final editing and proofreading processes. They are intended to generate buzz and interest in a book before its official release date. Collectors may also seek out UPTs due to their rarity and potential value.