This is Rumor Replay, a weekly column at 9to5Mac offering a quick rundown of the most recent Apple product rumors, with analysis and commentary. Today: big developments with Apples first foldable iPhone, plus iOS 19 and Siri rumors. Here are this weeks latest Apple rumors.Ming-Chi Kuo on Apples first foldable iPhoneMing-Chi Kuo, an analyst with sources in the supply chain, has shared his predictions for Apples first foldable iPhone coming in 2026.Heres an overview of what he expects:Book-style design, not the top-down fold previously reported5.5-inch outer display and 7.8-inch inner displayTouch ID in the side button, likely with no Face IDRetail price above $2,000 and $2,500No visible crease or wrinkles from the fold9-9.5mm thick when folded, and only 4.5-4.8mm unfoldedHinge that uses stainless steel and titanium, with casing thats titaniumKuo believes that only about 3-5 million units of the foldable iPhone will ship in 2026. Not for lack of demand, but rather due to production complexities limiting capacity.My takeawaysOne important thing to keep in mind is that Kuo isnt necessarily reporting these as exact details of the foldable iPhone. Rather, hes sharing his predictions and expectations based on what he currently knows.Thats relevant, for example, because while details like the screen size and thickness of the device seem right up his alley of supply chain details, the pricing guess is just that: a guess.That said, this is a fascinating rundown of what might be coming to the foldable iPhone nonetheless.I was intrigued by previous reports that the iPhone would have a top-down fold design. But I didnt necessarily see that offering much value. A book-style fold makes a lot more sense to me. And as a long-time fan of the iPad mini, the chance to get a mini-style tablet built into my pocketable iPhone is very compelling.Lots can still change between now and the expected fall 2026 launch of the foldable iPhone, but these rumors certainly stoked my interest.iOS 19 and Siri updatesOver the weekend, Mark Gurman provided updates on iOS 19s development and a potential delay for select Siri upgrades.Gurman says that the LLM version of Siri is still on track to launch as part of iOS 19, though likely near the end of the release cycle in spring 2026. A key aspect of Siris upgrades, though, is reportedly behind schedule.The more conversational, chatbot-style Siri functionalities in the works will apparently no longer be unveiled as part of iOS 19 this June at WWDC. Instead, theyre expected to slip into iOS 20 next year.My takeawaysIts clear that OpenAI and other competitors have gotten ahead of Apple in the LLM-based assistant race. But that issue aside, I think Gurmans reported Siri delays are being overstated by a lot of people.Apples approach with its new era for Siri has been to gradually offer new improvements over time. It sounds like thats just going to keep happening not only in iOS 18.5 soon, but also iOS 19 and 20.Siri has a giant user base today, so its unsurprising that Apple wont radically change everything about it all at once. While getting too far behind competition is a legitimate concern, its also potentially overblown because of Apples ecosystem and hardware advantages.What are your takeaways from this weeks Apple rumors about the foldable iPhone and more? Let us know in the comments.Best iPhone accessoriesAdd 9to5Mac to your Google News feed. FTC: We use income earning auto affiliate links. More.Youre reading 9to5Mac experts who break news about Apple and its surrounding ecosystem, day after day. Be sure to check out our homepage for all the latest news, and follow 9to5Mac on Twitter, Facebook, and LinkedIn to stay in the loop. Dont know where to start? Check out our exclusive stories, reviews, how-tos, and subscribe to our YouTube channel