The Horizon 2020 work programmes for 2016-2017 have been pre-published on the web page of the Europen Commission.
The adoption and the publication of the work programme by the Commission are expected in mid-October 2015. Only the adopted work programme will have legal value.
You can access them here:
https://ec.europa.eu/programmes/horizon2020/en/draft-work-programmes-2016-17