A lot of people are under the impression that you don't become dependent on Suboxone and that it doesn't have withdrawal symptoms, but that's not true.
Suboxone has that information available on their website, and it seems pretty clear to me:
6. Does SUBOXONE just substitute one dependence for another?
A: All opioids can cause physical dependence. SUBOXONE belongs to a class of opioids called "partial opioid agonists." As a partial agonist, buprenorphine appears to produce less physical dependence, limited euphoria, and less potential for abuse compared with a full agonist, eg, heroin, oxycodone, and hydrocodone. SUBOXONE has potential for abuse and produces dependence of the opioid type with a milder withdrawal syndrome than full agonists.
When patients are ready to stop taking SUBOXONE, the dose is slowly and gradually tapered. The withdrawal symptoms of SUBOXONE are milder than those seen with a full opioid agonist and can be managed with your doctor's supervision.