Here are the patch notes for the latest Demo build (1.6). Saves from this build are incompatible with previous versions, so you may want avoid updating before finishing your current run.

• Completely reworked the tutorial system - even seasoned players might learn something new!
• You no longer have to travel back to the Chrysalis to get a new Boon after defeating a wave - they are automatically given to you after the wave ends
• Permanent Boons and Mythical Boons are both listed in the boon selection UI now - you can see all of your collected boons in one place
• If the player is far from the Chrysalis when the level is cleansed after the final wave, items close to them will no longer disappear
• Friendly creatures now have a green outline when you hover over them
• The tile indicator under the cursor turns red if there is no path to the tile
• Game now pauses automatically when opening the Symbiont UI
• Increased the base Stun time of Storm Spirits to 2.0 seconds from 1.0 second.
• Graphics optimizations, should result in 20-30% increased GPU performance
• Fixed an issue where the game would hang for several seconds after defeating the final wave of a level