ZPE 1.6.7 is definitely set to make an uproar in comparison to many of it's predecessors. That's because of the fact that it adds more than 5 new major features ranging from the TYPO system to quick lambda functions and changes to the way references expressions work.
But now another new feature has been added - a feature that will benefit the TYPO engine considerably but has also been requested since the early days of the language development. The addition of these new types of lists has had considerable implications on the language itself too, fixed size lists are often faster to work with.
The syntax for writing one of these new lists, let's say of type string and one of type integer, each with five elements, would be:
$strings = [""] * 5 $ints =  * 5