The look of Goku's new “transformation” for the upcoming film 'Dragon Ball Z: Ressurection 'F'' has just been revealed, after somewhat leaking out through a variety of sources before official confirmation was made. The movie (which can be read about in more depth here thanks to the hard working folks at Kanzenshuu) will tell the story of a revived Freeza as he comes to Earth looking for revenge on the Saiyans for his earlier defeats.
The 'form' itself is a bit hard to quantify as of now apparently. Dialogue in the film itself apparently describes it as just 'a Super Saiyan with the powers of a Super Saiyan God' thus altering the normal golden hair and aura to that of blue, but some sources are already referring to it as 'Super Saiyan God Super Saiyan'. Whether this name will turn out to be accurate in any official capacity is yet to be known.
'Ressurection 'F'' is due to come out on April 18th, with a US premiere following shortly thereafter and a 'larger' run planned for this summer from FUNimation. The first trailer for the film can be viewed here, and the second here. Expect further coverage on the film (as well as first 'pre-film viewing' thoughts) to come in the near future!