diff --git a/README.md b/README.md
index 441ddd6..8a84b6d 100755
--- a/README.md
+++ b/README.md
@@ -12,6 +12,10 @@ Official implementation of
 
 ----
 
+**Discrete branch:** this branch is under active development and contains experimental support for discrete action spaces. We expect a stable release to be available in a few months. Please use the `main` branch for the time being.
+
+----
+
 **Announcement: training just got ~4.5x faster!**
 
 Expect **~4.5x** faster wall-time (depending on hardware and task) with the most recent release (Nov 10, 2024). A majority of the speedups in this branch are enabled with the additional flag `compile=true`. To run the code with `compile=true`, **you will need to install the latest `nightly` versions of PyTorch, TensorDict, and TorchRL**. See `docker/environment.yaml` for a tested configuration. `compile=true` is available in state-based online RL at the moment, and we expect to roll out support across all settings in the coming months. Thank you to [Vincent Moens](https://github.com/vmoens) who has been a key contributor to our torch.compile compatibility!