7.0.2 - Freeform Portals
Build arbitrary shaped nether portals, with all the previously enabled Obsidian Block
5.3.5 - Faster Obsidian Mining
All Nether Pickaxes have improved mining speed for Obsidian Blocks
5.3.5 - Charge Obsidian
Use a Lightning Rod to create crying (or weeping) obsidian.
5.3.5 - Create blue Obsidian
Use a bucket of Water on a Lava-Source above Soulsand/-stone to generate blue Obsidian.
5.3.5 - AutoConvert old Worlds
BetterNether was migrated to BCLib which requires some updates on your world