Engadget - It's not often that the folks in Redmond get to debut a new operating system as big as Windows 8, so we can't really blame them for going on at length about every feature of it. The latest to get the in-depth treatment on the Building Windows 8 blog is the Mail app, which has already gone through some fairly big changes since the Consumer Preview and is apparently set to receive even more before the final release. (Software, Windows 8)