diff --git a/packages/forms/src/forms.ts b/packages/forms/src/forms.ts
index 81caaa2dca..2f6f27c8a4 100644
--- a/packages/forms/src/forms.ts
+++ b/packages/forms/src/forms.ts
@@ -40,7 +40,7 @@ export {NgSelectOption, SelectControlValueAccessor} from './directives/select_co
 export {SelectMultipleControlValueAccessor} from './directives/select_multiple_control_value_accessor';
 export {AsyncValidator, AsyncValidatorFn, CheckboxRequiredValidator, EmailValidator, MaxLengthValidator, MinLengthValidator, PatternValidator, RequiredValidator, ValidationErrors, Validator, ValidatorFn} from './directives/validators';
 export {FormBuilder} from './form_builder';
-export {AbstractControl, FormArray, FormControl, FormGroup} from './model';
+export {AbstractControl, AbstractControlOptions, FormArray, FormControl, FormGroup} from './model';
 export {NG_ASYNC_VALIDATORS, NG_VALIDATORS, Validators} from './validators';
 export {VERSION} from './version';
 
diff --git a/packages/forms/src/model.ts b/packages/forms/src/model.ts
index a9e18c08c8..1fa3b9cdda 100644
--- a/packages/forms/src/model.ts
+++ b/packages/forms/src/model.ts
@@ -80,10 +80,24 @@ function coerceToAsyncValidator(
 
 export type FormHooks = 'change' | 'blur' | 'submit';
 
+/**
+ * @whatItDoes Interface for options provided to an {@link AbstractControl}.
+ *
+ * @experimental
+ */
 export interface AbstractControlOptions {
+  /**
+   * List of validators applied to control.
+   */
   validators?: ValidatorFn|ValidatorFn[]|null;
+  /**
+   * List of async validators applied to control.
+   */
   asyncValidators?: AsyncValidatorFn|AsyncValidatorFn[]|null;
-  updateOn?: FormHooks;
+  /**
+   * The event name for control to update upon.
+   */
+  updateOn?: 'change'|'blur'|'submit';
 }
 
 
diff --git a/tools/public_api_guard/forms/forms.d.ts b/tools/public_api_guard/forms/forms.d.ts
index a3e676d08e..793758f3b2 100644
--- a/tools/public_api_guard/forms/forms.d.ts
+++ b/tools/public_api_guard/forms/forms.d.ts
@@ -86,6 +86,13 @@ export declare abstract class AbstractControlDirective {
     reset(value?: any): void;
 }
 
+/** @experimental */
+export interface AbstractControlOptions {
+    asyncValidators?: AsyncValidatorFn | AsyncValidatorFn[] | null;
+    updateOn?: 'change' | 'blur' | 'submit';
+    validators?: ValidatorFn | ValidatorFn[] | null;
+}
+
 /** @stable */
 export declare class AbstractFormGroupDirective extends ControlContainer implements OnInit, OnDestroy {
     readonly asyncValidator: AsyncValidatorFn | null;