Based on your comments, you successfully tested your software on VMs which is a good news.

But as an application developer you must be prepared to adapt your code to newer releases otherwise it will be quickly abandoned.

Now to ensure that it will continue to work with new releases of Ubuntu I strongly encourage you to maintain it as a package and provide a complete test suite for your application and call it during the build process of the package (e.g by calling setup.py test in your debian/rules override_dh_auto_test section).

You can easily set up daily builds of your package in a ppa using a bzr-builder recipe.
That way, you'll be notified of all build failures caused by new software versions or broken dependencies.

New releases are usually open for development a few days after the official release announcement. Look at our ppa page, Utopic is now part of the distro series we are building for: