There was a new flurry of “Do Not Call” list deadline emails going around, so I googled and found this page thanks to the “urban legends” section of About.com.
The key debunks are:

• Contrary to the e-mail, cell phone numbers are NOT being released to telemarketers, and you will NOT soon be getting telemarketing calls on your cell phone.
• There is NO deadline by which you must register your cell phone number on the Registry. …
• There is only ONE DNC Registry. There is no separate registry for cell phones.

More from donotcall.gov.