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@@ -65,9 +65,28 @@ Notable changes
P2P and network changes
-----------------------
+- The mempool now tracks whether transactions submitted via the wallet or RPCs
+ have been successfully broadcast. Every 10-15 minutes, the node will try to
+ announce unbroadcast transactions until a peer requests it via a `getdata`
+ message or the transaction is removed from the mempool for other reasons.
+ The node will not track the broadcast status of transactions submitted to the
+ node using P2P relay. This version reduces the initial broadcast guarantees
+ for wallet transactions submitted via P2P to a node running the wallet. (#18038)
+
Updated RPCs
------------
+- `getmempoolinfo` now returns an additional `unbroadcastcount` field. The
+ mempool tracks locally submitted transactions until their initial broadcast
+ is acknowledged by a peer. This field returns the count of transactions
+ waiting for acknowledgement.
+
+- Mempool RPCs such as `getmempoolentry` and `getrawmempool` with
+ `verbose=true` now return an additional `unbroadcast` field. This indicates
+ whether initial broadcast of the transaction has been acknowledged by a
+ peer. `getmempoolancestors` and `getmempooldescendants` are also updated.
+
+
Changes to Wallet or GUI related RPCs can be found in the GUI or Wallet section below.
New RPCs
@@ -87,6 +106,13 @@ New settings
Wallet
------
+- To improve wallet privacy, the frequency of wallet rebroadcast attempts is
+ reduced from approximately once every 15 minutes to once every 12-36 hours.
+ To maintain a similar level of guarantee for initial broadcast of wallet
+ transactions, the mempool tracks these transactions as a part of the newly
+ introduced unbroadcast set. See the "P2P and network changes" section for
+ more information on the unbroadcast set. (#18038)
+
#### Wallet RPC changes
- The `upgradewallet` RPC replaces the `-upgradewallet` command line option.