As always, you can get the latest beta version from the "develop" git branch. Alternatively, the self-contained source tarball is at
http://www.sagemath.org/download-latest.html
858268b4001 (github/develop, tag: 10.7.rc2) Updated SageMath version to 10.7.rc2
ea5217eea3c gh-40552: bump gp2c to 0.0.14
85142426f03 gh-40526: Delete one appearance of sage-python
4a2dac04955 (tag: 10.7.rc1) Updated SageMath version to 10.7.rc1