Below you will find an extensive list of the work that went into MorphOS 3.3. Please note that this is just an overview and does not mention or explain every new feature. In order to download the time-limited demo version, please go to this page.
The release notes for some of the other 2.x and 3.x releases of MorphOS are available via the following links:
 
Release 3.3 boot.img Changes

The following is a (probably incomplete) list of changes made between the 3.2 and 3.3 release of MorphOS to the ROM (boot.img) based components.

Quark and Related Modules

  • Fixed UniNorth setup. This fixes a boot issue with some iBook models.

Cybergraphics

  • G5 alignment fixes to allow 16 bit screenmodes.

Intuition

  • Display backlight level could sometimes go out of sync.

FatFS

  • Fixed wrong fib_Size64 for files >=2GB.

Keylargo

  • ADB keyboard mapping fixes.

PowerBook

  • Fn + Return now mapped as Insert key.
  • Display backlight level could sometimes go out of sync.
  • No longer shows keyboard backlight change feedback on machines with no keyboard backlight.
Release 3.3 Disk Changes

Following is a (probably incomplete) list of changes made to the disk based components of MorphOS. While not mentioned for every component translations were updated for most of them. Also various cosmetic fixes were applied here and there.

Ambient

  • Fixed national characters handling.
  • Fixed to delete softlinks to directories correctly.

Apps/Jukebox

  • Fixed play/pause in the screenbar when all tracks are removed.

Apps/Scribble

  • Fixed document encoding issues when loading them by drag & drop, etc.

Apps/VPDF

  • Fixed problems with PostScript output.

C/Battery

  • Fixed output when no battery present.

C/LHa

  • Fixed a rare bug that could cause some archives to be corrupt.
  • Better large file support.

C/PathPart

  • Sets correct return code on success now.

C/TCPDump [NEW]

Classes/Blankers/picview.btd

  • Fixed font handling and a quirk in transitions.

Classes/Datatypes/j2k.datatype

  • Fixed alpha channel handling.

Classes/Datatypes/tiff.datatype

  • Fixed a wrong read from NULL.

Classes/Multimedia/Outputs/audio.output

  • Fixed a problem with lockups caused by some audio files having sampling rate not divisible by 2.

Classes/Multimedia/multimedia.class

  • Fixed conversion of time to audio frame number (MediaTimeToAudioFrame() function).

Classes/Multimedia/Streams/http.stream

  • Fixed a problem of chunked transferred redirection, redirecting to plain transfer target. Chunked transfer flag is now cleared at every redirection.

Classes/USB/xbox360.class

  • Inverted the y axis on analog controllers.

Devs/Monitor/Radeon

  • Fixed a problem with AGP initialisation that could lead to severe graphics performance problems.
  • Radeon 9800 chips on G5 machines now use MMIO based data transfers.
  • Fixed Radeon 7000 setup problem introduced in MorphOS 3.2
  • Enabled 16 bit screenmodes on G5 based computers.

Libraries/bugreport.library

  • Collects improved debug information.

Libraries/ixemul.library

  • Fixed O_APPEND when used on big (>=2GB) files.

Prefs/Touchpad.mprefs

  • Only shows up on notebooks with USB touchpads.

Utilities/MCalc

  • Conversion of result of inverse trigonometric functions (ASin(), ACos(), ATan()) was broken.
  • Improved precision of rad <-> grad conversion.

Utilities/Multiview

  • Fixed @{line} attribute handling in AGuide documents.

Utilities/Transfer

  • Fixed issues with deleting or copying multiple files.
  • General memory handling and stability improvements.

Tools/IWizard

  • Fixed update mode destination partition version check.