For those of you befuddled as to why Apple didn't support calendars in the latest version of iPhoto, wonder no more.

Apple just today sent us a note saying that it has pushed a software update that adds calendars to iPhoto '11. There's no explanation as to why they were missing in the first place, but it's a safe bet that it just wasn't ready when Apple introduced the latest version of the photo software along with iLife '11 and two new versions of the MacBook Air on October 20.

In addition to the calendar option, there are now a dozen more letterpress card design options--a feature new to iPhoto '11--including (of course) holiday themes.

For a comprehensive review of the entire iLife '11 software suite, don't miss CNET's review.