Probably a result of the common forward-publishing-date that a majority of the publishing industry does (magazines you receive in July dated August 2008, etc.) This story is probably set to be published and released on the print version tomorrow, the 27th.

NYT book review comes with the Sunday edition but is delivered to homes and published online with the Saturday edition.

It could have been dated in Australian time... given we appear to be a day ahead of you guys at times :)