add changelog

CHANGELOG.md

@@ -197,11 +197,13 @@ Every module contains its own CHANGELOG.md. Please refer to the module you are i
 ### Client Breaking Changes
 
 * (runtime) [#19040](https://github.com/cosmos/cosmos-sdk/pull/19040) Simplify app config implementation and deprecate `/cosmos/app/v1alpha1/config` query.
+* (client) [#20870](https://github.com/cosmos/cosmos-sdk/pull/20870) Increased gas cost for processing newly added timeout timestamp field in tx body. 
 
 ### CLI Breaking Changes
 
 * (perf)[#20490](https://github.com/cosmos/cosmos-sdk/pull/20490) Sims: Replace runsim command with Go stdlib testing. CLI: `Commit` default true, `Lean`, `SimulateEveryOperation`, `PrintAllInvariants`, `DBBackend` params removed
 * (server) [#18303](https://github.com/cosmos/cosmos-sdk/pull/18303) `appd export` has moved with other genesis commands, use `appd genesis export` instead.
+* (client) [#20870](https://github.com/cosmos/cosmos-sdk/pull/20870) Add `-timeout-timestamp` flag for tx time based timout.
 
 ### Deprecated
 

proto/cosmos/tx/v1beta1/tx.proto

@@ -111,10 +111,6 @@ message TxBody {
 
   // timeout_height is the block height after which this transaction will not
   // be processed by the chain.
-  //
-  // Note, if unordered=true this value MUST be set
-  // and will act as a short-lived TTL in which the transaction is deemed valid
-  // and kept in memory to prevent duplicates.
   uint64 timeout_height = 3;
 
   // unordered, when set to true, indicates that the transaction signer(s)
@@ -123,8 +119,8 @@ message TxBody {
   // incremented, which allows for fire-and-forget as well as concurrent
   // transaction execution.
   //
-  // Note, when set to true, the existing 'timeout_height' or 'timeout_timestamp' value must
-  // be set and will be used to correspond to a height/time_stamp in which the transaction is deemed
+  // Note, when set to true, the existing 'timeout_height' value must
+  // be set and will be used to correspond to a time_stamp in which the transaction is deemed
   // valid.
   bool unordered = 4;