The speculations already started before going to Monaco and now it is expecting the deal had already done and it is waiting for announcing. Combination between Williams - Mercedes will be more productive than the actual deal with Renault from 2014.
The only thing to worry is that Williams changes engines a lot and that is a wasting of time to adopt all the technology on every new engine. They must secure more stable deal with engines manufacture's and i hope this is the one.
So here is the link of the full article >> http://www.auto-motor-und-sport.de/form ... 74816.html