If you depend on 3rd party apps on your device to work, then do not be in a hurry to upgrade to Android 5.x as soon as it comes out. Give it 45-60 days after release before you upgrade. Resist the nag screens to update until you are ready. There is a good reason why the corporate world does not just immediately install major OS changes. Because they come with bugs initially. All operating systems. Windows, Mac, Android, iOS. And it tales some time for 3rd party applications to catch up.