This is an important feature for those of us with multiple monitors who might be using other software while playing (such as Steam chat or xfire).
This is not however a benefit to only those of us with multiple monitors, as a borderless windowed mode allows essentially instant transitions from one window to another, where true fullscreen mode usually results in a black screen for at least a few seconds while the computer catches up.
Great job on everything so far guys, it looks fantastic!
Edited by Turbo Corvair, 29 May 2012 - 04:28 PM.