As we speak, for the third and hopefully final time, Time Tripping is being patched, this time with some important improvements. In order of importance:

Much-much-better trigger scenery animations.
New difficulty mode: On Hard, lava kills you.
Jazz can now walk up slopes instead of having to jump.
Numerous random level bugs removed.
New tiles and palette for the tileset, some old tiles (like the vines) improved, dithering removed.
Better tileset masking.
Monks' skull blocks replaced with hearts to symbolize health.
Status bar reorganized so you can see the coin symbol.