HP App Catalog now supports multiple app versionsTue, Jun 5, 2012 at 5:20PM
For clarity’s sake, a hypothetical: Your app, ‘Huzzah’ was made for webOS 1.4.5. You want to update Huzzah for webOS 2.x, but doing so will break the app for your loyal customers still on webOS 1.4.5. Before developers were stuck between a rock and an out-of-date operating system version. Today, you can can simply submit the updated version Huzzah app and uncheck the devices no longer supported by the update and the App Catalog will continue to serve the old, still-functioning version to those on the older version of webOS.
HP finally made a step in the right direction! I hope Apple implements this with their own app store.