Apple Insider:

Trademark attorney Brian Conroy contacted AppleInsider on Tuesday with a list of trademarks that Apple is said to have filed internationally for what could be upcoming products. Amongst the trademarks are known Apple product names, like Siri, Breathe, the True Tone Display as found in the iPad Pro series, macOS Sierra with several associated spellings, and the phrase “designed by Apple in California” as seen on nearly every Apple product.

However, also listed in Apple trademark document are other phrases not immediately identifiable. Listed by Conroy as particularly notable are a mysterious “Iris Engine” and variants, plus registrations for a “Smart Button,” “Touch Bar,” “Progress Card”, and “Swift Lab.”

Also notable are “AirPod Case,” “Control Strip,” “Home Hub,” and “iBooks Storytime.”

I’d guess some of these will make more sense after today’s event, and more after (hopefully, fingers crossed) an early October event.