Foresight News reported that Starknet tweeted that due to the Grinta (Starknet v0.14.0) upgrade, which will significantly change the core architecture (including the decentralized sequencer and fee market), a short downtime (about 15 minutes) is expected to begin at 14:00 tomorrow (UTC+8). During the suspension, the mainnet will not accept transactions to avoid processing errors after the network resumes.