Just as a reminder for people who bought policies on the Exchanges for 2014 and plan to continue those policies in 2015 — please manually re-enroll at some point during the open enrollment period.
Healthcare.gov is preparing an automatic re-enrollment as te default mechanism. The default re-enrollment will be the same person going to the same exact plan that they had in 2014 for 2015. If that plan does not exist because the offering insurer is pulling the plan, the buyer will be defaulted into a similar plan from the same insurer. If the insurer is pulling out of the market, the individual will receive a nice e-mail telling them about the problem.
There are several significant problems with this default (there are always problems with defaults, it is a matter of choosing which ones to embrace and which ones to avoid).