Does UPDATE FROM VALUES lock rows in the order they are listed?

I'm bulk updating some rows using UPDATE ... FROM (values ... as described in this answer . Will the rows will be locked in the order that they appear in the values? Or do I need to do an explicit SELECT FOR UPDATE first? Here's an example statement

UPDATE stats as t set "individualCount" = new_values."individualCount"
  FROM (values (6::int,7::int),(3::int,15::int))
  as new_values("individualCount","id") 
  WHERE new_values."id" = t."id"

(id is the primary key of the table)