I purchased the Head First Object Oriented and Design book years ago (pdf, epub, mobi, etc) and it states: may 3 2015 under the updated section.
I By Brett McLaughlin, Gary Pollice, David West
Publisher: O'Reilly Media
Ebook: June 2009
just re-downloaded the book and the copyright within the book is 2007. Help me understand what should be updated and the date discrepancies. Does my purchase not allow for updates to the book? Thanks!
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That updated date is probably due to one of the ebook formats being fixed for something. You can tell what has been updated by checking out the errata page and the column on the far right side called Date Corrected. That shows when the error was corrected. It looks like there hasn't been any changes since 2007, though. Here is the link to the page -
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