POI updates and street updates are totally different things. POIs change often!
Not sure about Genesis but on my Acura, when I updated as soon as it was available, new streets that were less than 6 months old showed up just fine including new highway exits and flyovers!
it's all part of the same database, and all under the same submission requirements, there are multiple companies that make navigation discs for car manufacturers, and one car makers might utilize multiple companies as a result of different third party manufacturers for different models or model year infotainment units.
There is also Local, County, State, and Federal resources involved in submitting the data to the National Coordination Office, which is the Federal Government's Executive Committee who is responsible for collecting GPS-related information from multiple state and federal agencies to support the operations of Space Base Global Positioning Systems.
While developers in your area may have submitted the documentation to their State Regulatory offices for new developments, not all do so, there is still a new development in my area of Los Angeles, that has 120 Townhomes that have been occupied since 2015 and the Genesis data and my Wife's Toyota GPS Data, both still show as the previous Ford/
Lincoln Dealer that occupied the space from the 1960s until 2007.
Google and Apple Maps should this as a residential neighborhood now complete with the new addresses.
OEM navigation systems are IMO worthless, they are expensive to update (Genesis aside at least for the first 3 years) and they are never completely up to date.
Systems like
CarPlay and
Android Auto are the wave of the future for vehicles, their update cycles are monthly, and they utilize a device that is not locked to the car but allows projection to the vehicle screen, there is no point any longer of including antiquated and outdate OEM built in GPS systems.