This proposal aims upgrade Polkadot to [v9340](https://github.com/paritytech/polkadot/releases/tag/v0.9.34): the specific details on this upgrade please check the release notes. 

- This is a runtime-only release. 
- No node client is released, also this Polkadot runtime replaces runtime v9320 and v9330.

Proposal hash: `0xace5dccb8eecfab754154a27c370a513d79d4fcda40f5837be1c0f129cdf4726`

Please note this proposal is submitted as an external motion: meaning if/after the Polkadot Council approves, the proposal will be up for vote by the community in democracy module. 

Make sure to vote at your convenience!

### IMPORTANT NOTE ON THIS UPGRADE:

Assuming Referendum 96 passes, Polkadot will upgrade to runtime v9340 on Saturday 14 Jan. This will have several effects: **please read below!**

First, any outstanding multisig calls (ones where one signatory has signed, but not the threshold) will not be able to execute. Please either finish your multisig calls before this upgrade, or wait until after it is completed. [https://github.com/paritytech/substrate/pull/12072](https://github.com/paritytech/substrate/pull/12072).

All preimages and the dispatch queue will be cleared. Any Referenda already passed but not enacted will thus not execute. If the Referendum is ongoing, the preimage can be re-uploaded after the upgrade. [https://github.com/paritytech/substrate/pull/11649](https://github.com/paritytech/substrate/pull/11649).

Schedule the currently externally-proposed majority-carries referendum to be tabled
immediately. If there is no externally-proposed referendum currently, or if there is one
but it is not a majority-carries referendum then it fails.

The dispatch of this call must be `FastTrackOrigin`.

- `proposal_hash`: The hash of the current external proposal.
- `voting_period`: The period that is allowed for voting on this proposal.
	Must be always greater than zero.
	For `FastTrackOrigin` must be equal or greater than `FastTrackVotingPeriod`.
- `delay`: The number of block after voting has ended in approval and this should be
  enacted. This doesn't have a minimum amount.

Emits `Started`.

Weight: `O(1)`

- Polkadot is going to be upgraded to version v9340.
- This upgrade is only for the runtime and not the node client.
- The upgrade will replace previous versions v9320 and v9330.
- There is a proposal for this upgrade that needs to be approved by the Polkadot Council and then voted on by the community.
- There are some important things to note about this upgrade, including the clearing of preimages and the dispatch queue.

#74 Runtime Release v9340 for Polkadot