We have read some official Microsoft statements in different channels and discovered, that April 1st, 2019 is the deadline for upgrade/transition from NAV 2009-2017 to NAV 2018. If you have NAV 2009-2017 license and you were paying BREP, you will be able to upgrade/transition to Dynamics NAV 2018 till April 1st, 2019. You will keep concurrent user license type if you upgrade to NAV 2018. We have written more information
here.
Answers
There is, however, a deadline when to upgrade the license file. It's a small but important difference
Licensse can be upgraded now and kept on the shelf. The only problem with this approach is when one wants to add objects or users to the old license. One possible way of alleviating it is to buy couple of extra users and objects before upgrading the license file.
Dynamics NAV, MS SQL Server, Wherescape RED;
PRINCE2 Practitioner - License GR657010572SG
GDPR Certified Data Protection Officer - PECB License DPCDPO1025070-2018-03
Sounds strange. What is maintenance for if you can’t upgrade??
BTW 70% of the customer base is still on Classic. This is why I don't believe the whole thing, there are limits to which they can afford to screw the customer base, they will be move back from it once they get feedback from companies like Adidas or IKEA.