Update version (#4138)

dhruvesh09 · web-flow · commit 5b3b3fc2c903 · 2021-08-10T15:31:28.000-07:00
* Update RELEASE.md

* Update version.py

* Update version.py
diff --git a/tfx/version.py b/tfx/version.py
@@ -15,4 +15,4 @@
 """Contains the version string of TFX."""
 
 # Note that setup.py uses this version.
-__version__ = '1.2.0'
+__version__ = '1.2.0-rc0'
