According to Odaily, the Starknet community has announced the imminent release of Cairo 2.7.0. The current release candidate, 2.7.0-rc.3, is available for community testing. This version includes an upgrade to Sierra v1.6.0, which means that contracts written with v2.7.0 can only be deployed on Starknet version 0.13.2 or higher.
The testnet upgrade is scheduled for August 5, with the mainnet upgrade planned for August 26.