Refer the proposal from the book

Author: chrischdi

docs/book/src/tasks/experimental-features/experimental-features.md

@@ -16,6 +16,7 @@ Currently Cluster API has the following experimental features:
 * `KubeadmBootstrapFormatIgnition` (env var: `EXP_KUBEADM_BOOTSTRAP_FORMAT_IGNITION`): [Ignition](./ignition.md)
 * `MachineTaintPropagation` (env var: `EXP_MACHINE_TAINT_PROPAGATION`):
   * Allows in-place propagation of taints to nodes using the taint fields within Machines, MachineSets, and MachineDeployments.
+  * In future this feature is planned to also cover topology clusters and KCP. See the proposal [Propagating taints from Cluster API to Nodes](https://github.com/kubernetes-sigs/cluster-api/blob/main/docs/proposals/20250513-propogate-taints.md) for more information.
 
 ## Enabling Experimental Features for Management Clusters Started with clusterctl
 

docs/proposals/20250513-propogate-taints.md

@@ -556,6 +556,7 @@ This allows to gain experience and the ability to do adjustments and graduate th
 - [ ] 2025-06-06: Open proposal PR
 - [ ] 2025-10-13: Reworked the proposal based on feedback
 - [ ] 2025-10-21: Review feedback and discussions
+- [ ] 2025-11-12: Implementation for Machine, MachineSet and MachineDeployments
 
 <!-- Links -->
 [community meeting]: https://docs.google.com/document/d/1ushaVqAKYnZ2VN_aa3GyKlS4kEd6bSug13xaXOakAQI/edit#heading=h.pxsq37pzkbdq