Another, audio DSP-wise excellent (see THIS for my review) player has ended up dropping Dolby (AC-3, E-AC-3 and TrueHD) support: TTplayerHD. This, as has been pointed out in the introduction of my yesterday's article, renders tons of typical video recordings (for example, direct digital TV recordings in the US or all AVCHD videos) unplayable.
Here's the AppStore update list (Dolby audio dropping annotated by me):