angular v1.2.0rc1 が問題であることがわかりました。何らかの理由で、bower 構成が angulars lib を適切に更新していませんでした。

年：

{
  "name": "App",
  "version": "0.0.1",
  "dependencies": {
    "angular": "~1.2",
    "angular-route": "~1.2",
    "angular-route": "~1.2",
    "json3": "~3.2.4",
    "es5-shim": "~2.0.8"
  },
  "devDependencies": {
    "angular-mocks": "~1.2",
    "angular-scenario": "~1.2"
  }
}

新着：

{
  "name": "App",
  "version": "0.0.1",
  "dependencies": {
    "angular": "1.2.0-rc.2",
    "angular-route": "1.2.0-rc.2",
    "angular-animate": "1.2.0-rc.2",
    "json3": "~3.2.4",
    "es5-shim": "~2.0.8"
  },
  "devDependencies": {
    "angular-mocks": "1.2.0-rc.2",
    "angular-scenario": "1.2.0-rc.2"
  }
}

乾杯！