Yes and now we wait about 5-7 years (at least) for it to actually reach any sort of viability for consumer release.
Graphene is only thermally conductive in a 2D lattice. Use in a heatsink isn't the greatest idea. When you start adding more layers it begins acting as a heatsink. For it to be useful at all it'd have to be a few atoms thick. I'd do the maths for you but I really can't be assed. Even if you had one layer on the surface of the copper, the heat transfer from the graphene to the copper would be more insulating than just straight copper. I've seen this same idea come up over and over again and the same arguments rebuttal it so many times.
Although that said, it would be quite useful in the case of heatsinks for micro transistors. Now that is where it would be useful. If anything were to replace copper I'd put my bets on some sort of carbon alloy.
Good article tho
/thread
Worth the read. One of these days I will try it.