"major update" is a correct and usable phrase in written English.
You can use it when you want to describe a significant change or development in something. For example, "The company just released a major update to its app."
Gmail is getting major update starting Wednesday.
Microsoft just gave its Xbox a major update.
Northland Centre likewise stagnated; its last major update came in the early 1990s.
A major update has helped preserve its status as a South African PGA Championship venue.
Microsoft is rolling out a major update to Vista this month.
The latest edition is the first major update in 20 years.
"The last major update was in 2012, when we introduced timelines on pages," he says.
On Wednesday the company announced a major update to the Flickr mobile application.
The Weather Channel has released a major update to its free app on Apple.
He added: "So, no, we don't really have any major update for him.
Today the Berkeley Earth Surface Temperature Project released a major update to their temperature data.
