With 1.8.1 being released not too long ago, I was very surprised to find that Beta 1.9.1 Prerelease was available for download and test. This prerelease doesn’t have that many new things but some is always better than none, right?

Also, before I get to what has changed, been added, etc. – I must say to not even bother downloading this update if you like your game to be lag free, as it can lag heavily from time to time.

Change Log:
- Swamp biomes will be generated
- Water now has a “swampy” feel to it if found in the respective biome
- Vines become swampy if by swamp water
- Jumping by holding the space bar is disabled (but will be brought back in the next update, according to Notch on Twitter)
- NPC’s; though they don’t seem to actually do anything besides walk around

Other than that, I don’t really think that anything else was added or otherwise changed.