People here might be interested in https://www.logos.com/product/205074/tt-clark-handbook-of-septuagint-research , which is due to be published here on 2022-04-18.
T&T Clark Handbook of Septuagint Research
Students and scholars now widely recognize the importance of the Septuagint to the history of the Greek language, the textual development of the Bible, and to Jewish and Christian religious life in both the ancient and modern worlds. This handbook is designed for those who wish to engage the Septuagint in their research, yet have been unsure where to turn for guidance or concise, up-to-date discussion. The contributors break down the barriers involved in the technical debates and sub-specialties as far as possible, equipping readers with the tools and knowledge necessary to conduct their own research.
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