Looks like the combined Allspark Almanac has been delayed until February 18th, plus it has been confirmed to include some extras that were done up for FunPub in recent years, as well as about 10 pages of new content... making it an annoying temptation to buy if you already have the two separate volumes.
For those who didn't get Drift #3 (as it was released early in some countries), it should be out this week, and a preview can be seen here.472 page (book) that combines The AllSpark Almanac, The AllSpark Almanac II, The AllSpark Almanac Addenda we put together for the Transformers Collectors' Club, and ten-ish pages of new content teasing more of what Season 3.5 might look like. We worked closely with Derrick Wyatt to ensure that the book was as close to 100% canon as possible, with all new material carefully vetted (and a bit of old material tweaked or recontextualized.)
Probably not a surprise to see more JP Gen1 characters in this Drift miniseries, after they were featured in the last miniseries.