The phrase "a plan to update" is correct and usable in written English.
You can use it when discussing intentions or strategies for making changes or improvements to something.
Example: "The team has developed a plan to update the software to enhance its performance and security."
Alternatives: "a strategy for revision" or "a proposal for enhancement".
The studies were produced as part of a plan to update building regulations, but government officials conceded this took longer than planned and remained ongoing four years later.
As part of a plan to update this, the EU has proposed that Dublin and Cork ports be linked directly to docks in Belgium and the Netherlands.
In one case, the state bought the development rights of the 125-acre Central Jersey Reginnal Airport in Somerset County last March for $4.2 million after residents opposed a plan to update it.
At the same time, the Clinton administration and Congress were working on a plan to update the statutes governing the commission to take account of developments in the financial markets, especially involving futures, options and over-the-counter financial derivatives.
It has launched a plan to update and co-ordinate national tax laws.
At the time, Nest halted sales and offered refunds, while instituting a plan to update existing Nest Protect units to disable the Wave feature automatically.
Nearby, a partnership of owners led by Belvedere Capital, Jamestown and Angelo, Gordon & Company has invested more than $125 million toward a $1 billion plan to update Industry City, a 16-building waterfront industrial complex.
As a result of a deal struck with Republicans, the military developed a purchasing plan to update all three legs of the nuclear triad with modernized weapon systems.
And the dissolution of the state's redevelopment agencies, a cost-cutting measure, meant that a $50 million plan to update the city's 1958 Civic Auditorium, between Fourth and Main Streets, also had to be shelved.
The project is part of a $1.2 billion plan to update the entire library system through improvements to branch libraries, a larger endowment and the creation of two new libraries in Upper Manhattan and on Staten Island.
(NYT) BROOKLYN: HOSPITAL TO EXPAND -- Long Island College Hospital in Cobble Hill yesterday announced a $63 million plan to update its 516-bed hospital and several off-campus facilities.
