You'll have to ask support about that, but that "updated" could easily mean "has just posted a major release devlog".
Viewing post in Page Indexing and Tax Information Interview
As I said, if you check any of those titles, they are ordered by the publication date UNLESS it's a new seller, in which case you can check the Last Update field for an hint on when the staff reviewed the page and gave approval. Infact, they are all done in batches, all showing the same values.
I'll try contacting costumer support, then.