No, BUT...
No, all of the current AMD chipsets can potentially overclock, especially if you've got an unlocked Black Edition CPU where you would change the multiplier as the first and biggest step.
If you get a higher-end board, particularly a 990FX, you're likely to have a lot more control over additional overclocking options, like Northbridge (and other) voltage and frequency.
The great big BUT though, is that you NEED to make sure the board's VRMs can handle the load of overclocking. Cheaper AMD boards have 4+1 (or even 3+1) VRM arrangements, without heatsinks, and they will fry if you push them. Better boards are 6+1 or 8+1 and have hefty heatsinks on the VRMs. There's a public Googledocs spreadsheet I can't access at work that has tables of the various manufacturer's boards. It may be summarized as follows: Asus boards are most likely to be suited to overclocking (their VRMs are typically thermally protected). Many ASRock and Gigabyte boards are too. Many MSI boards, especially the cheaper ones, have a history of failing when overclocked.