📖 Add initial roadmap draft

docs/book/src/SUMMARY.md

@@ -46,3 +46,4 @@
     - [Provider List](./reference/providers.md)
     - [Code of Conduct](./code-of-conduct.md)
     - [Contributing](./CONTRIBUTING.md)
+    - [Roadmap](./roadmap.md)

docs/book/src/roadmap.md

@@ -0,0 +1,44 @@
+# Cluster API Roadmap
+
+This roadmap is a constant work in progress, subject to frequent revision. Dates are approximations.
+
+## Ongoing
+
+- Documentation improvements
+
+## v0.3 (v1alpha3) ~ March 2020
+
+- [Control plane provider concept, KubeadmControlPlane implementation](https://github.com/kubernetes-sigs/cluster-api/blob/bf51a2502f9007b531f6a9a2c1a4eae1586fb8ca/docs/proposals/20191017-kubeadm-based-control-plane.md)
+- [clusterctl v2 - easier installation & upgrades of Cluster API + providers](https://github.com/kubernetes-sigs/cluster-api/blob/bf51a2502f9007b531f6a9a2c1a4eae1586fb8ca/docs/proposals/20191016-clusterctl-redesign.md)
+- [Integration with cloud provider VM scaling groups (MachinePools)](https://github.com/kubernetes-sigs/cluster-api/blob/bf51a2502f9007b531f6a9a2c1a4eae1586fb8ca/docs/proposals/20190919-machinepool-api.md)
+- [Machine failure remediation](https://github.com/kubernetes-sigs/cluster-api/blob/bf51a2502f9007b531f6a9a2c1a4eae1586fb8ca/docs/proposals/20191030-machine-health-checking.md)
+- [Provider end to end testing framework](https://github.com/kubernetes-sigs/cluster-api/blob/bf51a2502f9007b531f6a9a2c1a4eae1586fb8ca/docs/proposals/20191016-e2e-test-framework.md)
+
+## v0.4 (v1alpha4) ~ July 2020
+
+- [Machine bootstrap failure detection](https://github.com/kubernetes-sigs/cluster-api-provider-aws/issues/972)
+- [Improved status conditions](https://github.com/kubernetes-sigs/cluster-api/issues/1658)
+- [Machine load balancers](https://github.com/kubernetes-sigs/cluster-api/issues/1250)
+- [Extensible machine pre-delete hooks](https://github.com/kubernetes-sigs/cluster-api/issues/1514)
+- Define clusterctl inventory specification & have providers implement it
+- Figure out how to change configurations through rolling updates (e.g. apiserver flags, DNS/addons, etc.)
+
+## v0.5 (v1alpha5? v1beta1?) ~ November 2020
+
+- ?
+
+## TBD
+
+- [Pluggable MachineDeployment upgrade strategies](https://github.com/kubernetes-sigs/cluster-api/issues/1754)
+- Dual stack IPv4/IPv6 support
+- Windows nodes
+- Auto-scaling support (either with cluster-autoscaler, or something else)
+- UEFI booting (image-builder)
+- GPU support (BitFusion, Elastic GPU, etc.) (may be provider-specific)
+- SR-IOV support (may be provider-specific, may be image-builder)
+- FIPS/NIST/STIG compliance
+- [Simplified cluster creation experience](https://github.com/kubernetes-sigs/cluster-api/issues/1227)
+- Solid story on certificate management
+- [Node attestation](https://github.com/kubernetes-sigs/cluster-api/issues/1739)
+- Desired machine states ([running/stopped](https://github.com/kubernetes-sigs/cluster-api/issues/1810) / [restart](https://github.com/kubernetes-sigs/cluster-api/issues/1808))
+- Define Cluster API conformance