docs: update roadmap (#2460)

* update roadmap

* update roadmap

* fix typos

* Update roadmap.md

docs/roadmap/roadmap.md

@@ -4,54 +4,75 @@ order: 1
 
 # Roadmap ibc-go
 
-_Lastest update: July 7, 2022_
+_Lastest update: October 3, 2022_
 
 This document endeavours to inform the wider IBC community about plans and priorities for work on ibc-go by the team at Interchain GmbH. It is intended to broadly inform all users of ibc-go, including developers and operators of IBC, relayer, chain and wallet applications.
 
 This roadmap should be read as a high-level guide, rather than a commitment to schedules and deliverables. The degree of specificity is inversely proportional to the timeline. We will update this document periodically to reflect the status and plans.
 
-## Q3 - 2022
+## v6.0.0
 
-At a high level we will focus on:
+### Interchain Accounts improvements
 
-### Features
+These improvements tackle two shortcomings of the current implementation of ICS-27:
 
-- Releasing [v4.0.0](https://github.com/cosmos/ibc-go/milestone/26), which includes the ICS-29 Fee Middleware module.
-- Finishing and releasing the [refactoring of 02-client](https://github.com/cosmos/ibc-go/milestone/16). This refactor will make the development of light clients easier.
-- Starting the implementation of channel upgradability (see [epic](https://github.com/cosmos/ibc-go/issues/1599) and [alpha milestone](https://github.com/cosmos/ibc-go/milestone/29)) with the goal of cutting an alpha1 pre-release by the end of the quarter. Channel upgradability will allow chains to renegotiate an existing channel to take advantage of new features without having to create a new channel, thus preserving all existing packet state processed on the channel.
-- Implementing the new [`ORDERED_ALLOW_TIMEOUT` channel type](https://github.com/cosmos/ibc-go/milestone/31) and hopefully releasing it as well. This new channel type will allow packets on an ordered channel to timeout without causing the closure of the channel.
+- The lack of a default/standard underlying app (also known as _authentication module_), which created a bottleneck for chains looking to integrate the controller submodule.
+- The need to separate application and authentication concerns.
 
-### Testing and infrastructure
+The changes will make integrating the controller chain functionality easier (see [ADR 009](../architecture/adr-009-v6-ics27-msgserver.md) for more information), and with the release of Cosmos SDK v0.46.x, they will enable any Cosmos SDK module (e.g `x/auth`, `x/gov`, `x/group`) to register interchain accounts and send transactions on their behalf. 
 
-- Adding [automated e2e tests](https://github.com/cosmos/ibc-go/milestone/32) to the repo's CI.
+For more details about these changes, please read [this blog post](https://medium.com/the-interchain-foundation/ibc-go-v6-changes-to-interchain-accounts-f9996449d782).
 
-### Documentation and backlog
+### Other features/improvements
 
-- Finishing and releasing the upgrade to Cosmos SDK v0.46.
-- Writing the [light client implementation guide](https://github.com/cosmos/ibc-go/issues/59).
-- Working on [core backlog issues](https://github.com/cosmos/ibc-go/milestone/28).
-- Depending on the timeline of the Cosmos SDK, implementing and testing the changes needed to support the [transtion to SMT storage](https://github.com/cosmos/ibc-go/milestone/21).
+- ICS-20:
+  - Adding a `metadata` field in `FungibleTokenPacketData` (implementation of [this](https://github.com/cosmos/ibc/pull/842) spec update).
+  - Adding the sequence number of the packet sent to `MsgTransferResponse`.
+- 04-channel:
+  - Simplify `SendPacket` API (implementation of [this](https://github.com/cosmos/ibc/pull/731) spec update).
 
-We have also received a lot of feedback to improve Interchain Accounts and we might also work on a few things, but will depend on priorities and availability.
+Follow the progress with the [`v6.0.0` milestone](https://github.com/cosmos/ibc-go/milestone/35) or the [project board](https://github.com/orgs/cosmos/projects/7/views/23).
 
-For a detail view of each iteration's planned work, please check out our [project board](https://github.com/orgs/cosmos/projects/7).
+## v7.0.0
 
-### Release schedule
+### 02-client refactor
 
-#### **July**
+This refactor will make the development of light clients easier. The ibc-go implementation will finally align with the spec and light clients will be required to set their own client and consensus states. This will allow more flexibility for light clients to manage their own internal storage and do batch updates. See [ADR 006](../architecture/adr-006-02-client-refactor.md) for more information.
 
-We will probably cut at least one more release candidate of v4.0.0 before the final release, which should happen around the end of the month. 
+Follow the progress with the [beta](https://github.com/cosmos/ibc-go/milestone/25) and [RC](https://github.com/cosmos/ibc-go/milestone/27) milestones or in the [project board](https://github.com/orgs/cosmos/projects/7/views/14).
 
-For the Rho upgrade of the Cosmos Hub we will also release a new minor version of v3 with SDK 0.46.
+### Localhost connection
 
-#### **August**
+This feature will add support for applications on a chain to communicate with applications on the same chain using the existing standard interface to communicate with applications on remote chains.
 
-In the first half we will probably start cutting release candidates for the 02-client refactor. Final release would most likely come out at the end of the month or beginning of September.
+For more details, see the design proposal and discussion [here](https://github.com/cosmos/ibc-go/discussions/2191). Issues need still to be created and will be added to the [`v7.0.0` milestone](https://github.com/cosmos/ibc-go/milestone/34).
 
-#### **September**
+### Upgrade SDK v0.47.x
 
-We might cut some pre-releases for the new channel type, and by the end of the month we expect to cut the first alpha pre-release for channel upgradability.
+Follow the progress with the [milestone](https://github.com/cosmos/ibc-go/milestone/36).
 
-## Q4 - 2022
+## v8.0.0
 
-We will continue the implementation and cut the final release of [channel upgradability](https://github.com/cosmos/ibc/blob/master/spec/core/ics-004-channel-and-packet-semantics/UPGRADES.md). At the end of Q3 or maybe beginning of Q4 we might also work on designing the implementation and scoping the engineering work to add support for [multihop channels](https://github.com/cosmos/ibc/pull/741/files), so that we could start the implementation of this feature during Q4 (but this is still be decided).
+### Channel upgradability
+
+Channel upgradability will allow chains to renegotiate an existing channel to take advantage of new features without having to create a new channel, thus preserving all existing packet state processed on the channel.
+
+Follow the progress with the [alpha milestone](https://github.com/cosmos/ibc-go/milestone/29) or the [project board](https://github.com/orgs/cosmos/projects/7/views/17).
+
+### Path unwinding
+
+This feature will allow tokens with non-native denoms to be sent back automatically to their native chains before being sent to a final destination chain. This will allow tokens to reach a final destination with the least amount possible of hops from their native chain.
+
+For more details, see this [discussion](https://github.com/cosmos/ibc/discussions/824).
+
+---
+
+This roadmap is also available as a [project board](https://github.com/orgs/cosmos/projects/7/views/25).
+
+For the latest expected release timelines, please check [here](https://github.com/cosmos/ibc-go/wiki/Release-timeline).
+
+For the latest information on the progress of the work or the decisions made that might influence the roadmap, please follow our [engineering updates](https://github.com/cosmos/ibc-go/wiki/Engineering-updates).
+
+---
+
+**Note**: release version numbers may be subject to change.