THE BURNED OVER DISTRICT

For the first time in almost 60 years the President of Cuba will not be named Castro. And for that little revolutionary island, it is a big deal.

Raúl Castro, who took over from his brother Fidel 12 years ago and led Cuba through some of its biggest changes in decades, is expected to step down as president on Thursday and hand power to someone outside the Castro dynasty for the first time since the Cuban revolution more than half a century ago.

During his two terms as president, Mr. Castro opened up his Communist country to a small but vital private sector and, perhaps most significantly, diplomatic relations with the United States. It was a notable departure from his brother’s agenda, yet it was possible only because he, too, was a Castro.

His handpicked successor, Miguel Díaz-Canel Bermúdez, 57, is a Communist Party loyalist who was born a year after Fidel Castro claimed power in Cuba. His rise ushers in a new generation of Cubans whose only firsthand experience with the revolution has been its aftermath — the early era of plenty, the periods of economic privation after the demise of the Soviet Union, and the fleeting détente in recent years with the United States, its Cold War foe.

Officials started gathering here in Havana on Wednesday morning and put forward Mr. Díaz-Canel as the sole candidate to replace Mr. Castro, all but assuring his selection by the Communist Party.

Though Mr. Díaz-Canel’s path to the top office has been forecast for years, many an heir apparent before him has fallen by the wayside in the search for a successor to lead the country, whether because of party disloyalty, snide remarks or projecting too much power for the Castros’ liking.

In that delicate balancing act, Mr. Díaz-Canel, a former provincial leader and minister of higher education, has shown the sort of restraint prized by the Castros.

But that same caution has left him an enigma both inside and outside the country.

Cuba’s next president will be hemmed in from multiple sides: Raúl Castro is expected to remain the head of the Communist Party, and the diplomatic opening with the United States has closed abruptly under President Trump.

“There is nothing in his résumé to suggest he is going to take risks,” Theodore Piccone, a Cuba scholar at the Brookings Institution, said of Mr. Díaz-Canel. “But that is the way the system works — anyone willing to take the risk before now would not be in line to be the president.”

Mr. Castro is leaving office at a time of tremendous change on the island, both real and promised.

In just the last decade, Cuba has lost its defining leader, Fidel Castro, which made way for Raúl to take unprecedented steps to loosen the state’s grip on the economy and begin to nurture a private sector.

Then, two years ago, the nation brokered a détente with the United States, paving the way for the reopening of the American Embassy and the first visit of a sitting United States president in 88 years.

But change is often a managed affair in Cuba, orchestrated to maintain order while leaving little to chance or, especially, political uncertainty. While historic, the economic changes in Cuba have been halting, to the frustration of many Cubans hoping for better pay and more opportunity. So, too, has foreign investment, with leaders leery that it could grow to the point that they can no longer control it.

Now, the country’s next president will face a new set of challenges. Since coming to office, Mr. Trump has lashed out at Cuba and reversed, in spirit if not entirely in deed, the new relationship that President Barack Obama established with the Cuban government.

As Cuba seeks to modernize its moribund economy with a new generation of leaders less tethered to the past, the United States appears to be moving back toward a policy of isolation. Fewer American tourists are visiting Cuba and bringing dollars with them, in no small part because of Mr. Trump’s decision to undo some of Mr. Obama’s easing of restrictions on travel to the island.

Not being a Castro will limit the power Mr. Díaz-Canel may have but the transition, even under the watchful eye of Communist Party chief Raul, will continue and we can be certain that thanks the Orange Douche it won't involve the US.