Since today the latest version of Analysis Office 2.8 (release notes) is available. You can download it with your s-user in the SAP Support Portal. There are only a few fixes:
If you want the latest edition of Analysis Office - The Comprehensive Guide, you can get it now with a 20% discount until easter 2020. Use the code Easter2020 in the online shop.
If you want to read a review first, have a look at the review from Tammy Powlas or from Xavier Hacking. Tammys review is about the 3rd edition and Xaviers about the 1st edition.
If you have any questions or need any help, don't hesitate to contact me.