Correct. There are 2 GbG maps now. Each has different rewards and percentages for those rewards.
The 2 maps (volcano and waterfall, aka GbG 1 map and GbG 2 map...) will alternate each season for your guild. If you get the "volcano" map (our GbG 1 style map that we used for 2 years...) you'll have SoH fragments.
If you get the new GbG 2 waterfall map, you'll have elephant fragments, and coin pack/supply pack rewards.
It's not clear if the coin/supply packs are in BOTH types of games (GbG 1 and GbG 2). They are clearly in GbG 2, which I am playing on this season.