Nette fully supports PHP 7.4. What does it mean?

If you want to take advantage of all the PHP 7.4 features, such as typed properties, nothing prevents you. Just call composer update

When I mentioned typed properties, their support can be found in the new version of PHP Generator:

$class = new Nette\PhpGenerator\ClassType('Demo');

$class->addProperty('items')
	->setType('array')
	->setNullable()
	->setInitialized();

echo $class;

Result:

class Demo
{
	public ?array $items = null;
}

You can now also print anonymous functions in an abbreviated form called arrow functions:

$closure = new Nette\PhpGenerator\Closure;
$closure->setBody('return $a + $b;');
$closure->addParameter('a');
$closure->addParameter('b');

echo (new Nette\PhpGenerator\Printer)->printArrowFunction($closure);

Result:

fn ($a, $b) => $a + $b;

User input validation tool called Nette Schema, supports typed properties since it arrived on the scene, along with the launch of Nette 3 in April 2019:

class Config
{
	public string $dsn;
	public ?string $user;
	public ?string $password;
	public bool $debugger = true;
}

$schema = Nette\Schema\Expect::from(new Config);

Finally, you can use typed properties to inject dependencies into presenters:

class ArticlePresenter extends Nette\Application\UI\Presenter
{
	/** @inject */
	public Facade $facade;

How do you look forward to the new version of PHP?