No. Reason 11's Rack Plugin does not support the Reason Remote control surface system. rsTouch, and other Reason control surfaces, all rely on Reason Remote to do their work. rsTouch does work with stand-alone Reason 11.
The way that the iOS App Store currently works is that you are able to download the most recent version of a purchased app that is compatible with the version of iOS installed on your iDevice. However, when the app is no longer available on your iOS App Store, you no longer receive update notices in the App Store app. If you want to be notified of app updates, we announce them on our Delora Software Twitter feed (https://twitter.com/delorasoftware) (It is a low activity feed).
Since the iOS App Store app does not show an available update, you have to take a few extra steps to download the new version. First delete the old version of the app from your iDevice, then download it from the iOS App Store app’s “Purchased” screen. This will retrieve the latest version that is compatible with your iDevice. Here are the steps:
1. Back up your iDevice. This step is probably unnecessary but it is good insurance.
2. Open up the iOS App Store app on your iDevice and tap the account icon that is in the upper right corner. This will show your App Store account. Look for the item “Purchased” and tap it. This will show all the apps that you have purchased. Locate the app in the list. Only proceed to step 3 if you see it!
3. Delete the app from your iDevice.
4. Open the iOS App Store app again and repeat step #2 to locate the app in your list of purchases. Tap the download icon at the right (looks like a cloud with an arrow) and the app will be loaded on your iDevice.
You can repeat this procedure whenever a new version is available. Note though, that apps which store preference settings will loose those settings because they are deleted when you delete the app. You will have to manually change these settings back to the way you want them.