How was 2015 for MS Dynamics NAV ERP ?

Microsoft announced in late October 2015 that it is realigning license prices for Dynamics NAV, GP and AX user prices across versions and licensing models effecting from January 1, 2016. This possibly will increase additional user licenses costs this year in 2016. Let us go through the important news, developments, events and updates that happened around MS Dynamics NAV ERP system in the year 2015.