MTV news seemed to mock the idea, but I don't think it's giving the Jonas Bros any credit. Look at the situation in context:
The article is titled, "Jonas Brothers Go Hip-Hop?" Okay.. it does sound a little funny. But don't worry. They aren't doing a Jaoquin Phoenix. The article reports that the brothers simply have one song that might benefit from the influence of a hip hop artist like Common or Mos Def.
Featuring a Hip-Hop artist isn't exactly a stupid marketing move in today's culture. I actually recommended the same thing to several Christian bands in the last year. (Think about it. It happens all the time in the secular world. Consider last year's number seven most downloaded song by OneRepublic AND Timbaland: "Apologize." Or the number 10 song where Madonna joined Justin Timberlake and... again... Timbaland for "Four Minutes")
It's hard to deny Hip-Hop's popularity.
The only question is... could they bring in someone clean? That will be the hard part.