Changes since the official v2.2 release:

 v2.3 Beta 2
-   Fixed a bug in the '060 version that caused graphical garbage
    in some games (Ashguine; MonMonMonster; Super Rambo).
-   Improved render speed for screens 5 & 7 (cybergraphics) and
    eliminated a large lookup table for those screens.
-   Improved render speed for screens 5..8 (native) by 30..40%.
-   Greatly improved the speed when running on the workbench.

 v2.3 Beta 1
-   Added Colecovision support.
-   Fixed the autorun feature.
-   fMSX once again supports two cartridges.
-   Two more Z80 registers were registerized (HL and SP). In addition, the
    Z80 engine will now perform 16-bit reads and writes when possible.
-   The VRAM layout for 64K screens is now correct. This means the Feedback
    intro looks correct now, and Breaker is playable.