diff --git a/google/cloud/batch/v1alpha/job.proto b/google/cloud/batch/v1alpha/job.proto
index c4a2201cf..2feda464a 100644
--- a/google/cloud/batch/v1alpha/job.proto
+++ b/google/cloud/batch/v1alpha/job.proto
@@ -399,7 +399,6 @@ message AllocationPolicy {
     // The minimum CPU platform.
     // See
     // https://cloud.google.com/compute/docs/instances/specify-min-cpu-platform.
-    // Not yet implemented.
     string min_cpu_platform = 3;
 
     // The provisioning model.
@@ -554,8 +553,7 @@ message AllocationPolicy {
   PlacementPolicy placement = 10;
 }
 
-// A TaskGroup contains one or multiple Tasks that share the same
-// Runnable but with different runtime parameters.
+// A TaskGroup defines one or more Tasks that all share the same TaskSpec.
 message TaskGroup {
   option (google.api.resource) = {
     type: "batch.googleapis.com/TaskGroup"
@@ -574,8 +572,6 @@ message TaskGroup {
     AS_SOON_AS_POSSIBLE = 1;
 
     // Run Tasks sequentially with increased task index.
-    //
-    // Not yet implemented.
     IN_ORDER = 2;
   }
 
@@ -622,8 +618,6 @@ message TaskGroup {
   // addition to any environment variables set in task_environments, specifying
   // the number of Tasks in the Task's parent TaskGroup, and the specific Task's
   // index in the TaskGroup (0 through BATCH_TASK_COUNT - 1).
-  //
-  // task_environments supports up to 200 entries.
   repeated Environment task_environments = 9;
 
   // Max number of tasks that can be run on a VM at the same time.