Currently Under Development

• Water Physics
• Vertical Slabs
• Being able to craft a torch and a pickaxe

Up next

• Block Context menu for more advanced building abilities
• Cave Culler (15-35% more FPS)
• Improved Creative Inventory
• Ambient Sound Effects System (with holoacustic sound?)
• WorldEdit Extensions
• MS Paint style Toolbar for World Edit

Full Roadmap
(Warning: Very rough estimate, subject to change)

• Winter 2016 (Dec - Feb)
  • Playable Survival (Inventory Backpacks, Smelting, Mining, Farming, Crafting, Hunger, Basic Combat)
  • In-Game Tools to create and animate animals and mobs
  • First 2-3 Creatures (one peaceful and one hostiler perhaps) with basic AI
  • Basic Weather System
  • Mechanics
  • (if time left) Sand Physics
  • (if time left) Villages and Trading System
  • (if time left) Dungeons
     
• Spring 2017 (Mar - May)
  • "Official" Survival Mode Release
  • Improved Survival Experience
  • Advanced Weather System
  • More Creatures and Insects
  • Player Progession (Leveling, Gear Attributes, Improved Combat System)
  • Villages, Mechanics, Dungeons
     
• Summer 2017 (June - Aug)
  • Player Progession (Leveling, Gear Attributes, Improved Combat System)
  • Villages, Mechanics, Dungeons
  • (if time left) Infinite Dimensions
  • (if time left) Wilderness Survival Playstyle
  • (if time left) Survive&Automate Playstyle
     
• Fall 2017 (Sept - Dec)
  • Games Convention Attendence
  • Whatever didn't get finished