Filecoin v15 OhSnap Network Upgrade

The next Filecoin network upgrade (v15, codenamed OhSnap) is expected on March 1st 2022 (epoch 1594680).

This upgrade will enable SnapDeals, which speed up the process of incorporating data into existing committed capacity sectors by 80%. This feat was achieved by making use of a 1-message protocol, you can find more details about this here and here.

Code-wise, this upgrade entails 2 Lotus releases: v1.14 and v1.15.

• v1.14: This release is mandatory for all Lotus users, as it includes consensus-breaking changes and integrates the new actors version (v7).
  The final version is expected to be released on February 17th, but `rc` versions can be found here in the meantime.

  ⚠️ We suggest upgrading your nodes to this version as soon as possible, as all nodes are required to be on >= v1.14 before the mainnet upgrade! ⚠️

• v1.15: This release will include everything in v1.14 plus the latest functionality and improvements. It is highly recommended for storage providers, data brokers, etc to upgrade to this version as soon as it’s out.

You can find more information in the following links:

• OhSnap: Network updates page & releases timeline
• SnapDeals: FIP-0019 & video explanation
• Lotus releases (Github)