We had the same question/concern. We guess the new calendar format was a much(?) requested feature, as it matches MS Outlook more closely.
From: Todd Tango <bounce-toddtango1950@tessituranetwork.com> Sent: 8/23/2012 11:05:00 AM
Always looking for feedback on new features so thanks for the input. In the next build of v11 (11.0.4) this will be a configurable option.
Great news, Chuck. Thanks!