According to the Huffington Post:

The results of the caucus voting, however, do not directly determine which candidate will win the support of Iowa's voters for the presidential nomination. In fact, the caucuses are just first step in the process. Each caucus selects delegates to send to each of the 99 county conventions, which are held in March. At the county conventions, Democrats select delegates to district conventions where delegates to the state convention are chosen. Republicans bypass the district convention stage, choosing delegates to their state convention at the county conventions. Both party's state conventions are held in June. Only then, when state convention delegates cast their votes for delegates to the national party conventions, that Iowa's preferred presidential candidate's in each major party will be determined.

The Week says this:

Despite all the media attention, caucusgoers' presidential preferences are non-binding. The real business takes place after the presidential vote, when the caucusgoers who stick around pick delegates and platform proposals for their county GOP convention. The 99 county conventions will later select delegates to the four district conclaves, each of which chooses three national delegates and two more for the June 12 state GOP convention, where the remaining 13 uncommitted national delegates are finally selected. Three high-ranking Iowa GOP leaders are automatic delegates. It's these two dozen or so delegates who will vote for a nominee at the national GOP's summer convention in Florida.

So does th GOP have district conventions or not? Who is correct? Is all our news so dependant on whom we read or to whom we listen?