Yes, it is new, I was just creating a thread for it myself.
Even ADnD was not this sparse.
It was worse in the beginning. Add up all the pages of Dragon which were about AD&D, and the first core book, and compare it to the number of pages WOTC's put out in the first year for 5e in the six major releases, and add the pages in Dragon+ which are actually about 5e, and add the Wizards.com articles about 5e (like Legends and Lore), and you will find 5e well outpaces AD&D in the first year.
Dragon did about 384 pages per year in the beginning which is 1 and a half 256 page "Hardcovers" plus of course the other stuff being produced.
That is certainly not insignificant.
With the fall of Netheril itself I would not be surprised if Cormyr just walked in and took Sembia, the Sembians, aside from some of the elites, would likely welcome them. At the very least the middle cities would likely be annex.
Also take into account that given Cormyr's heavy causalities Cormyr might be recruiting beyond it boarders.
Also Ambassadors to Waterdeep, Balder's Gate, Neverwinter, all likely are guarded by Purple Dragons. Other high Cormyran dignitaries may also have Purple Dragon Knights.
Lastly if Purple Dragon Knight is a Paladin subclass, they're maybe Purple Dragon Knights who take the oath, but dedicate it to another region/kingdom/city state. Being Cormyran may no longer be required oddly.
Which brings me to what makes me curious.
Which classes have Purple Dragon Knight, Bladesinger as subclasses (Swashbuckler we already know is a Rogue).
Which other classes have subclasses?
Which races have new subraces?
My guess is we get Elderin (Star Elf?), Moon Elf, Sun Elf, Wild Elf, Wood Elf, maybe Sea Elf.
Deep Gnomes will likely be in.
Grey Half-Orc?
Grey Dwarf.
Halfling Ghostwise
Imaskari Human
Half-Drow
How about races that aren't normally given subraces, like Tiefling, perhaps Demonborn, or you could make the Shadar Kai and Vryloka subraces (unlikely, but both races have simularities in origin stories to 4e Tieflings, maybe 5e Tieflings).
Backgrounds will likely be mostly region based, mostly Sword Coast regions and maybe Cormyr.
Forgotten Realms? Blade Singers? This sounds like pure fan service. Pass.
Someone wake me when we get a product that isn't spoon feeding us sentimental crap like this. Maybe something that spurs creativity & originality, rather than rehashing tired tropes.