EU BLUE CARD contract minimum changes to 6 months for third country nationals

According to a blurb in the Essentiel.

Here’s what I’ve been able to find so far (makes no mention of contract length but DOES cover remuneration)

under “prerequisites”

https://guichet.public.lu/en/citoyens/immigration/plus-3-mois/ressortissant-tiers/hautement-qualifie/salarie-hautement-qualifie.html

Third-country nationals must meet the following requirements first:

• hold a valid passport;
• check whether or not they have to obtain a visa to enter the Schengen area;
• satisfy the conditions of higher professional qualification, i.e.:
  • have an employment contract of one year at least for highly qualified work;
  • have an offer for a remuneration:
    • at least equivalent to 1.5 times the amount of the Luxembourg average gross (EUR 88,452); or
    • at least equivalent to 1.2 times the Luxembourg average gross annual (EUR 70,762) for work in one of the following professions and for which the government has noticed a particular need to employ third-country nationals:
      • mathematicians, actuaries and statisticians;
      • systems analysts;
      • software developers;
      • web and multimedia developers;
      • application programmers;
      • software and application developers and analysts, multimedia developers not listed elsewhere;
      • database designers and administrators;
      • system administrators;
      • computer network professionals;
      • database and network professionals not classified elsewhere;
  • show a document proving that they possess the high professional qualifications required for the activity or sector mentioned in the employment contract, or that they meet the requirements to carry out the regulated profession indicated in the employment contract.