The latest long-term support release of Unity, For creators who are about to embark on projects that are past the prototyping phase, Unity 2019. The new Long-Term Support (LTS) version of Unity contains everything from the previous three TECH stream releases with all the fixes and. Unity LTS Explained (Long-Term Support). Both versions can be used for creating apps, the choice depends on your project. Latest release is usually the best to use, when beginning.