The cheeky use of "peek" instead of "peak" tells me that they're going to preview a future product — a sneak peek of something they're working on. The colorful AR logo Apple created gives that illusion. Perhaps we'll get a preview of the AR glasses? Or perhaps since it's paired with "performance" a look at the future Mac Pro. This would be in addition to the aforementioned products (iPhone SE, iPad Air, 13" MacBook Pro).
Agree that this is either a first look at Apple's AR glasses or new bigger iMacs... or iPads Air (although I hope not as that would be very boring by comparison)
Since Apple underlined the idea that Pro Macs are still Space Grey and Silver with the M1 Max/Pro MacBooks Pro, then there's almost no chance the focus of this event is on a new MacBook Pro, iMac Pro or any kind of Pro product.
The emphasis on the separate, bold colors of the "Macintosh rainbow" in the invite usually means we're getting a new range of colored products.
The idea of a new, bigger iMac launching also works with the wordplay on “peek” instead of "peak", possibly referring to the new display that's either bigger (than a previous model) or bigger and better and is probably coupled with something that delivers "peak performance" in terms of CPU too. So it's a double entendre.
My best bet is a 27"-32" iMac that is overall much more powerful with an M2 chip, maybe close in performance to the M1 Max/Pro MacBooks Pro.
But the iMac idea kinda falls apart being that Apple wouldn't show these colors on a black background if the products in question are new, bigger iMacs with white bezels.
A better match between colors and black bezels are iPads Air. So maybe this is just a new range of iPads Air with A15 chips, 5G for cellular models, and coming in a range of more saturated colors, like we get on the standard iPhones 12 and 13? I actually think this is the most likely scenario. Maybe they're also updating the displays, then the "peek" fits. Idk
Than again, the marketing and launches of iPads Air has also always had white backgrounds and this one is black.. so that doesn't quite fit either.
Maybe this is steering iPad Air in a more iPhone 12/13 direction in terms of color options and with the addition of 5G and away from the desaturated metallic of the 2020 Air? However, iPads Air don't have glass backs so it would be hard to get them to match the 12/13 look.