CHANGELOG: add 3.5, highlight gRPC gateway breaking changes

Signed-off-by: Gyuho Lee <gyuhox@gmail.com>

CHANGELOG-3.3.md

@@ -127,6 +127,7 @@ See [code changes](https://github.com/coreos/etcd/compare/v3.2.0...v3.3.0) and [
 - Translate [gRPC status error in v3 client `Snapshot` API](https://github.com/coreos/etcd/pull/9038).
 - v3 `etcdctl` [`lease timetolive LEASE_ID`](https://github.com/coreos/etcd/issues/9028) on expired lease now prints [`"lease LEASE_ID already expired"`](https://github.com/coreos/etcd/pull/9047).
   - <=3.2 prints `"lease LEASE_ID granted with TTL(0s), remaining(-1s)"`.
+- Replace [gRPC gateway](https://github.com/grpc-ecosystem/grpc-gateway) endpoint `/v3alpha` with [`/v3beta`](https://github.com/coreos/etcd/pull/8880).
 
 ### Dependency
 
@@ -303,7 +304,7 @@ See [security doc](https://github.com/coreos/etcd/blob/master/Documentation/op-g
 
 ### Added: gRPC gateway
 
-- Replace [gRPC gateway](https://github.com/grpc-ecosystem/grpc-gateway) `/v3alpha` with [`/v3beta`](https://github.com/coreos/etcd/pull/8880).
+- Replace [gRPC gateway](https://github.com/grpc-ecosystem/grpc-gateway) endpoint `/v3alpha` with [`/v3beta`](https://github.com/coreos/etcd/pull/8880).
   - To deprecate [`/v3alpha`](https://github.com/coreos/etcd/issues/8125) in `v3.4`.
 - Support ["authorization" token](https://github.com/coreos/etcd/pull/7999).
 - Support [websocket for bi-directional streams](https://github.com/coreos/etcd/pull/8257).

CHANGELOG-3.4.md

@@ -1,6 +1,6 @@
 
 
-## v3.4.0 (TBD 2018-05-01)
+## v3.4.0 (TBD 2018-06-01)
 
 See [code changes](https://github.com/coreos/etcd/compare/v3.3.0...v3.4.0) and [v3.4 upgrade guide](https://github.com/coreos/etcd/blob/master/Documentation/upgrades/upgrade_3_4.md) for any breaking changes.
 
@@ -32,6 +32,7 @@ See [code changes](https://github.com/coreos/etcd/compare/v3.3.0...v3.4.0) and [
 - Make [Lease `Lookup` non-blocking with concurrent `Grant`/`Revoke`](https://github.com/coreos/etcd/pull/9229).
 - Make etcd server return `raft.ErrProposalDropped` on internal Raft proposal drop in [v3 applier](https://github.com/coreos/etcd/pull/9549) and [v2 applier](https://github.com/coreos/etcd/pull/9558).
   - e.g. a node is removed from cluster, or [`raftpb.MsgProp` arrives at current leader while there is an ongoing leadership transfer](https://github.com/coreos/etcd/issues/8975).
+- Add [`snapshot`](https://github.com/coreos/etcd/pull/9118) package for easier snapshot workflow (see [`godoc.org/github.com/etcd/snapshot`](https://godoc.org/github.com/coreos/etcd/snapshot) for more).
 - Improve [functional tester](https://github.com/coreos/etcd/tree/master/functional) coverage: [proxy layer to run network fault tests in CI](https://github.com/coreos/etcd/pull/9081), [TLS is enabled both for server and client](https://github.com/coreos/etcd/pull/9534), [liveness mode](https://github.com/coreos/etcd/issues/9230), [shuffle test sequence](https://github.com/coreos/etcd/issues/9381), [membership reconfiguration failure cases](https://github.com/coreos/etcd/pull/9564), [disastrous quorum loss and snapshot recover from a seed member](https://github.com/coreos/etcd/pull/9565).
 
 ### Breaking Changes
@@ -66,6 +67,8 @@ See [code changes](https://github.com/coreos/etcd/compare/v3.3.0...v3.4.0) and [
   - 3.4 moves `cmd/vendor` directory to `vendor` at repository root.
   - Remove recursive symlinks in `cmd` directory.
   - Now `go get/install/build` on `etcd` packages (e.g. `clientv3`, `tools/benchmark`) enforce builds with etcd `vendor` directory.
+- Replace [gRPC gateway](https://github.com/grpc-ecosystem/grpc-gateway) endpoint `/v3beta` with [`/v3`](https://github.com/coreos/etcd/pull/9298).
+  - Deprecated [`/v3alpha`](https://github.com/coreos/etcd/pull/9298).
 
 ### Dependency
 
@@ -133,8 +136,7 @@ See [security doc](https://github.com/coreos/etcd/blob/master/Documentation/op-g
 
 ### Added: API
 
-- Add [`snapshot`](https://github.com/coreos/etcd/pull/9118) package for snapshot restore/save operations.
-  - See [`godoc.org:etcd/snapshot`](https://godoc.org/github.com/coreos/etcd/snapshot).
+- Add [`snapshot`](https://github.com/coreos/etcd/pull/9118) package for snapshot restore/save operations (see [`godoc.org/github.com/etcd/snapshot`](https://godoc.org/github.com/coreos/etcd/snapshot) for more).
 - Add [`watch_id` field to `etcdserverpb.WatchCreateRequest`](https://github.com/coreos/etcd/pull/9065), allow user-provided watch ID to `mvcc`.
   - Corresponding `watch_id` is returned via `etcdserverpb.WatchResponse`, if any.
 - Add [`raftAppliedIndex` field to `etcdserverpb.StatusResponse`](https://github.com/coreos/etcd/pull/9176) for current Raft applied index.
@@ -155,7 +157,7 @@ See [security doc](https://github.com/coreos/etcd/blob/master/Documentation/op-g
 
 ### Added: gRPC gateway
 
-- Replace [gRPC gateway](https://github.com/grpc-ecosystem/grpc-gateway) `/v3beta` with [`/v3`](https://github.com/coreos/etcd/pull/9298).
+- Replace [gRPC gateway](https://github.com/grpc-ecosystem/grpc-gateway) endpoint `/v3beta` with [`/v3`](https://github.com/coreos/etcd/pull/9298).
   - Deprecated [`/v3alpha`](https://github.com/coreos/etcd/pull/9298).
   - To deprecate [`/v3beta`](https://github.com/coreos/etcd/issues/9189) in `v3.5`.
 - Add API endpoints [`/{v3beta,v3}/lease/leases, /{v3beta,v3}/lease/revoke, /{v3beta,v3}/lease/timetolive`](https://github.com/coreos/etcd/pull/9450).

CHANGELOG-3.5.md

@@ -0,0 +1,15 @@
+
+
+## v3.5.0 (TBD 2018-10-01)
+
+See [code changes](https://github.com/coreos/etcd/compare/v3.4.0...v3.5.0) and [v3.5 upgrade guide](https://github.com/coreos/etcd/blob/master/Documentation/upgrades/upgrade_3_5.md) for any breaking changes.
+
+### Breaking Changes
+
+- [gRPC gateway](https://github.com/grpc-ecosystem/grpc-gateway) only supports [`/v3`](TODO) endpoint.
+  - Deprecated [`/v3beta`](TODO).
+
+### Added: gRPC gateway
+
+- [gRPC gateway](https://github.com/grpc-ecosystem/grpc-gateway) only supports [`/v3`](TODO) endpoint.
+  - Deprecated [`/v3beta`](TODO).