Correct. They only announced IQ2 and the Powercore II 10000.
So electrically if you are doing a DC-DC step-down you are using a buck converter such as from 12V DC down to 5V, or at least a regulator for the USB-PD profile 2 18W 12V 1.5A and profile 3 36W 13V 3A. You have the boost converter from 12V for profile 4 and profile 5 20V. It is genuinely very interesting to learn how these work.
What is happening is basically Faraday's electromagnetic rules where a changing electric field makes a changing magnetic field, and a changing magnetic field makes a changing electric field. So if you pass DC through a coil it creates a magnetic field, and then when you stop that DC electric current then the magnetic field collapses (at the speed of light) and that being a change of magnetic field causes an electric current to flow (in the opposite direction). Consider the analogy being to draw an arrow in a bow and release.
In a buck converter the switching on/off causes the release of the energy and the more often you switch the current the more efficient is the process. Like drawing lots of small arrows is more efficient than drawing one big arrow.
To do that switching involves a semiconductor chip running at high frequency.
That high frequency chip has its own losses.
Those losses are less if you use a smaller fabrication (the leading technology is 10 nanometer) as the wires all inside become shorter to lose less heat for any given task.
Hence, what I think is happening is the chips that Anker buys are moving to a newer more efficient smaller fabrication, so they are more efficient. Given less heat means you can have a smaller powerbank / device to spread less hear across smaller volume, those new chips = smaller devices. Or you can have more of them for more power in a given size. This matters more in portable powerbanks because heat from electronics accelerates aging of the Lithium cells.
So what I expect will happen is IQ2 will result in smaller products for a given power, and more power in current size.
In the case of the cigarette lighter problem your hand must touch the adapter without scolding, so there will be some ergonomically derived upper power limit which IQ2 will allow to produce more output. Efficiency matters increasingly with higher Wattage, because the lower your spike through the adapter the less likely the car's fuses fry, less likely to have an angry customer. Given an IQ2 cigaretter ligher USB-PD product would be noticeably better than an IQ USB-PD product, they'd have some inventory and manufacturing cost for such a short produce run, so it was decided to not make IQ USB-PD.
In the ask of a 45W+ USB-PD even if you had 90% efficiency, you're still talking 4W+ of heat accumulating inside the cigarette lighter charger, which would need a physically larger shape to reduce peak temperature. If you look at Anker's 40W+ chargers they all are rather chunky, for good thermal reasons tending to be rectangular.
By coincidence, the 12V DC of a cigarette lighter is close to the USB-PD Profile 2 12V 1.5a 18W and Profile 3 12V 3A 36W, so I think the efficiencies here will be higher, so a 36W USB-PD looks most viable. It gets harder if you have to boost 12V to 20V for Profiles 4 and 5.
Exactly which products when, not a clue, but I see IQ2 as a gateway to more goodness.
What i expect someone has decided in Anker is if they used IQ to, say, make a car charge USB-PD, then it would to be quite a large device, and so not fit on certain vehicles and/or feel too hot to touch, so they elected to release USB-PD with IQ2.
There is clearly some clever electronics engineers in Anker, to offer reliable cost-effective consumer products.