The new Terminator movie has an official title, Terminator: Dark Fate.
The studio is more than sure that the Terminator: Dark Fate will pull in a huge crowd, so they are not likely to move the opening date around.
If the marketing guys think so, well, we may see some movement in the opening date for that film as the Terminator: Dark Fate opening will certainly take precedence when it shows starting Nov 1st of this year.
Terminator: Dark Fate is slated to be the start of a trilogy of new Terminator sequels.