Update experimental config check (#57505)

As discussed updates the warning with experimental config

---------

Co-authored-by: Jimmy Lai <laijimmy0@gmail.com>

packages/next/src/server/config.ts

@@ -24,6 +24,7 @@ import { pathHasPrefix } from '../shared/lib/router/utils/path-has-prefix'
 import { ZodParsedType, util as ZodUtil } from 'next/dist/compiled/zod'
 import type { ZodError, ZodIssue } from 'next/dist/compiled/zod'
 import { hasNextSupport } from '../telemetry/ci-info'
+import { version } from 'next/package.json'
 
 export { normalizeConfig } from './config-shared'
 export type { DomainLocale, NextConfig } from './config-shared'
@@ -252,6 +253,12 @@ function assignDefaults(
 
   const result = { ...defaultConfig, ...config }
 
+  if (result.experimental?.ppr && !version.includes('canary')) {
+    Log.warn(
+      `The experimental.ppr feature is present in your current version but we recommend using the latest canary version for the best experience.`
+    )
+  }
+
   if (result.output === 'export') {
     if (result.i18n) {
       throw new Error(