Update ROADMAP for v0.4.0

Author: neoaggelos

README.md

@@ -32,9 +32,9 @@ See [Quick Start](./tutorial/quick-start.md) to launch a cluster on a single-nod
 
 ## Project Roadmap
 
-### v0.3.0
+### v0.4.0
 
-Rough steps for version v0.3.0:
+Rough steps for version v0.4.0:
 
 - [x] Private initial alpha testing.
 - [x] Cloud provider node patch to link Machines with workload cluster Nodes.
@@ -44,6 +44,7 @@ Rough steps for version v0.3.0:
 - [x] Add e2e tests using the cluster-api testing framework.
 - [x] Add PR blocking CI pipelines.
 - [x] Publish v0.2.0 release with v1alpha2 APIs.
+- [x] Add e2e tests for cluster upgrades.
 - [ ] Explore clusters with ClusterTopology=true (clusterclass), also allows us to run all existing ClusterAPI e2e tests like Autoscaler, etc.
 - [ ] Add cluster-templates for 3rd party providers, e.g. [Canonical Kubernetes](https://github.com/canonical/cluster-api-k8s).
 - [ ] Write documentation with setting up a development environment.