For details on the upgrade see: GIP

We are doing this upgrade in two steps:

• Step 1 (Stage 0 —> Stage 1): we change the channelDisputeEpochs value to 1 epoch
• Step 2 (Stage 2 —> Stage 3): we upgrade the Staking, StakingExtension and RewardsManager contracts

The rationale for doing this in two stages can be found in the Backwards Compatibility + Upgrade Path section of the GIP.

https://imgr.whimsical.com/object/Lbb4xWsVJUaiGbaJ8gJNZa

Exponential rebates deployment plan - Stage 1

Exponential rebates deployment plan - Stage 2