And…as I was stumbling around looking for a solution to a seemingly unrelated problem, I found out why the timestamp is necessary now in the Mac terminal.
http://www.coronalabs.com/blog/2012/09/19/faq-wednesday-iphone-5-and-ios-6/ (see #5)
Basically, the change on the Corona SDK was necessary due to some changes by Apple in order to show print() output at all–or something like that. [import]uid: 136105 topic_id: 35882 reply_id: 143556[/import]