diff --git a/proto/beacon/p2p/v1/types.proto b/proto/beacon/p2p/v1/types.proto
index 60d2bb963af9..5ffa769f3e9b 100644
--- a/proto/beacon/p2p/v1/types.proto
+++ b/proto/beacon/p2p/v1/types.proto
@@ -66,18 +66,32 @@ message Attestation {
   AttestationData data = 1;
   bytes aggregation_bitfield = 2;
   bytes custody_bitfield = 3;
-  bytes aggregate_signature = 4; // Type of [uint384] ?
+  bytes aggregate_signature = 4; // bytes96
 }
 
 message AttestationData {
+  // LMD GHOST vote
   uint64 slot = 1;
-  uint64 shard = 2;
-  bytes beacon_block_root_hash32 = 3;
-  bytes epoch_boundary_root_hash32  = 4;
-  bytes crosslink_data_root_hash32 = 5;
-  Crosslink latest_crosslink = 6;
-  uint64 justified_epoch = 7;
-  bytes justified_block_root_hash32 = 8;
+  bytes beacon_block_root = 2;
+
+  // FFG vote
+  uint64 source_epoch = 3;
+  uint64 source_root = 4;
+  uint64 target_root = 5;
+
+  // Crosslink vote
+  uint64 shard = 6;
+  bytes previous_crosslink_root = 7;
+  bytes crosslink_data_root = 8;
+
+  // Deprecated
+  // TODO(2307): Remove deprecated fields
+  bytes epoch_boundary_root_hash32 = 1000 [deprecated=true];
+  Crosslink latest_crosslink = 1001 [deprecated=true];
+  uint64 justified_epoch = 1002 [deprecated=true];
+  bytes justified_block_root_hash32 = 1003 [deprecated=true];
+  bytes beacon_block_root_hash32 = 1004 [deprecated=true];
+  bytes crosslink_data_root_hash32 = 1005 [deprecated=true];
 }
 
 message AttestationDataAndCustodyBit {
@@ -85,6 +99,15 @@ message AttestationDataAndCustodyBit {
   bool custody_bit = 2;
 }
 
+message IndexedAttestation {
+  // Validator indices
+  repeated uint64 custody_bit_0_indices = 1;
+  repeated uint64 custody_bit_1_indices = 2;
+  AttestationData data = 3;
+  // Aggregate signature
+  bytes signature = 4; // bytes96
+}
+
 message Validator {
   bytes pubkey = 1;
   // TODO(781): The usage of withdrawal_credentials is not defined in spec. Not used in Prysm yet.
@@ -120,22 +143,28 @@ message Crosslink {
 
 message BeaconBlock {
   uint64 slot = 1;
-  bytes parent_root_hash32 = 2;
-  bytes state_root_hash32 = 3;
-  bytes randao_reveal = 4;
-  Eth1Data eth1_data = 5;
-  bytes signature = 6; // bytes96
+  bytes parent_block_root = 2;
+  bytes state_root = 3;
+  BeaconBlockBody body = 4;
+  bytes signature = 5; // bytes96
 
-  // Block Body
-  BeaconBlockBody body = 7;
+  // Deprecated
+  // TODO(2307): Remove deprecated fields
+  bytes parent_root_hash32 = 1001;
+  bytes state_root_hash32 = 1002;
+  bytes randao_reveal = 1003;
+  Eth1Data eth1_data = 1004;
 }
 
 message BeaconBlockBody {
-  repeated Attestation attestations = 1;
-  repeated ProposerSlashing proposer_slashings  = 2;
-  repeated AttesterSlashing attester_slashings = 3;
-  repeated Deposit deposits = 4;
-  repeated VoluntaryExit voluntary_exits = 5;
+  bytes randao_reveal = 1; // bytes96
+  Eth1Data eth1_data = 2;
+  repeated Attestation attestations = 3;
+  repeated ProposerSlashing proposer_slashings  = 4;
+  repeated AttesterSlashing attester_slashings = 5;
+  repeated Deposit deposits = 6;
+  repeated VoluntaryExit voluntary_exits = 7;
+  repeated Transfer transfers = 8;
 }
 
 message DepositInput {
@@ -166,29 +195,59 @@ message DepositData {
 
 message ProposerSlashing {
   uint64 proposer_index = 1;
-  ProposalSignedData proposal_data_1 = 2;
-  bytes proposal_signature_1 = 3; // bytes96
-  ProposalSignedData proposal_data_2 = 4;
-  bytes proposal_signature_2 = 5;
+  BeaconBlockHeader header_1 = 2;
+  BeaconBlockHeader header_2 = 3;
+
+  // Deprecated
+  // TODO(2307): Remove deprecated fields
+  ProposalSignedData proposal_data_1 = 1001 [deprecated=true];
+  bytes proposal_signature_1 = 1002 [deprecated=true]; // bytes96
+  ProposalSignedData proposal_data_2 = 1003 [deprecated=true];
+  bytes proposal_signature_2 = 1004 [deprecated=true];
 }
 
 message AttesterSlashing {
-  SlashableAttestation slashable_attestation_1 = 1;
-  SlashableAttestation slashable_attestation_2 = 2;
+  IndexedAttestation attestation_1 = 1;
+  IndexedAttestation attestation_2 = 2;
+  // Deprecated
+  // TODO(2307): Remove deprecated fields
+  SlashableAttestation slashable_attestation_1 = 1001 [deprecated=true];
+  SlashableAttestation slashable_attestation_2 = 1002 [deprecated=true];
 }
 
 message Deposit {
-  repeated bytes merkle_proof_hash32s = 1;
-  uint64 merkle_tree_index = 2;
-  bytes deposit_data = 3;
+  // Branch in the deposit tree
+  repeated bytes proof = 1;
+  // Index in the deposit tree
+  uint64 index = 2;
+  DepositData data = 3;
+  // Deprecated
+  // TODO(2307): Remove deprecated fields
+  repeated bytes merkle_proof_hash32s = 1001 [deprecated=true];
+  uint64 merkle_tree_index = 1002 [deprecated=true];
+  bytes deposit_data = 1003 [deprecated=true];
 }
 
 message VoluntaryExit {
+  // Minimum epoch for processing exit
   uint64 epoch = 1;
   uint64 validator_index = 2;
   bytes signature = 3; // bytes96
 }
 
+message Transfer {
+  uint64 sender = 1;
+  uint64 recipient = 2;
+  // Amount in Gwei
+  uint64 amount = 3;
+  // Fee in Gwei for block proposer
+  uint64 fee = 4;
+  uint64 slot = 5;
+  // Sender withdrawal pubkey and signature
+  bytes pubkey = 6; // bytes48
+  bytes signature = 7; // bytes96
+}
+
 message Eth1Data {
   // Root of the deposit tree
   bytes deposit_root = 1;
@@ -207,3 +266,16 @@ message Eth1DataVote {
   Eth1Data eth1_data = 1;
   uint64 vote_count = 2;
 }
+
+message HistoricalBatch {
+  repeated bytes block_roots = 1;
+  repeated bytes state_roots = 2;
+}
+
+message BeaconBlockHeader {
+  uint64 slot = 1;
+  bytes previous_block_root = 2;
+  bytes state_root = 3;
+  bytes block_body_root = 4;
+  bytes signature = 5; // bytes86
+}