Following speculation about Jack Ma’s imminent retirement, Alibaba Group announced today that its CEO, Daniel Zhang, will succeed Ma as chairman next year. After stepping down as chairman on September 10, 2019 (exactly a year from now), Ma will continue serving as a board member until its annual general shareholders’ meeting in 2020.

After that, Ma will remain a lifetime partner of the Alibaba Partnership, or a group of 36 partners drawn from the senior management ranks of Alibaba Group companies and affiliates. They hold a considerable amount of sway over the company because they have the right to nominate, or in certain situations, appoint up to a simple majority of its board of directors.

Alibaba’s announcement follows reports that Ma’s retirement from the company he co-founded in 1999 as an online marketplace was imminent, with Ma, a former English teacher, planning to dedicate his time to philanthropy in education. Ma downplayed those reports, however, telling the South China Morning Post (which is owned by Alibaba) that instead he will gradually reduce his role in the company through a succession plan.

Ma stepped down as CEO in 2013, handing the position over to Jonathan Lu. Lu was replaced in 2015 by Zhang, Alibaba’s former COO, after Ma reportedly told employees that it’s time for the company to be run by people born in the 1970s and after (Zhang was born in 1972, three years after Lu).

In a letter sent to media outlets today, Ma wrote that Zhang has “demonstrated his superb talent, business acumen and determined leadership” since taking over as CEO.

“Under his stewardship, Alibaba has seen consistent and sustainable growth for 13 consecutive quarters,” Ma continued. “His analytical mind is unparalleled, he holds dear our mission and vision, he embraces responsibility with passion, and he has the guts to innovate and test creative business models.”

Ma added that “this transition demonstrates that Alibaba has stepped up to the next level of corporate governance from a company that relies on individuals, to one built on systems of organizational excellence and a culture of talent development.”

Ma also re-emphasized his narrative that his departure from Alibaba Group will be very gradual. “I have put a lot of thought and preparation into this succession plan for 10 years. I am delighted to announce the plan today thanks to the support of the Alibaba Partnership and our board of directors,” he wrote.

Of his plans after Zhang takes over as chairman next year, Ma said he will continue contributing to the Alibaba Partnership, before adding “I also want to return to education, which excites me with so much blessing because this is what I love to do. The world is big, and I am still young, so I want to try new things – because what if new dreams can be realized?! The one thing I can promise everyone is this: Alibaba was never about Jack Ma, but Jack Ma will forever belong to Alibaba.”