When the development of OSBot produces a finalized product. At the moment there are still a lot of components missing such as a few Random Solvers + some bugs with the API methods. In addition to that the OSBot 1 emulator is not anywhere near flawless either but works to a good standard so using OSBot 1 scripts on it will be a bit hit + miss.
We expect to see it within the next month or so have a finalized release, in which OSBot 1's life cycle will be given 1 month for people to use their Premium scripts as much as they want. Once that month is over, OSBot 1 will be discontinued and hopefully by that time brand new scripts will be released for OSBot 2.0 ^_^