When President Nelson announced that the Salt Lake Temple will close in 2019, he said the Temple is expected to reopen in 2024 with a public open house. See highlighted screenshot and link:
https://newsroom.churchofjesuschrist.org/article/plans-unveiled-salt-lake-temple-renovation
It was reported today that the renovations will not be completed until 2026. From the article:
The current estimated completion date is now in 2026, according to a Thursday news release from the church.
When the construction began, church leaders said it was estimated to be completed in 2025. It includes renovations to the temple — including a seismic upgrade — and changes to the grounds and other buildings. Thursday's statement said church leadership, project consultants and the general contractor support the new estimate.
At a minimum the Salt Lake Temple will have been closed for Six Years.
The news article is actually wrong to report that the church leaders said it would be completed in 2025 when the above news room article quotes President Nelson that it would be done in 2024.Here is the link the new article.