According to the latest edition of the Power On newsletter, Apple is facing multiple major hiccups in its AI rollout. While that isnt a surprise, it does mean that many of its roadmapped features are being delayed, and technical challenges are resulting in certain features, including the more conversational Siri update shipping later.Conversational Siri delaysLate last year, Gurman reported that Apple was working on an all new LLM Siri for iOS 19. This system would merge the two backends for Siri that we currently have today, into one new and unified architecture. Currently, Siri has two entirely separate backends: one for simpler requests and one for more complex requests.Luckily, LLM Siri and its new architecture is still on track to launch with iOS 19. However, it was supposed to be accompanied by a more conversational approach, something more like ChatGPT. Gurman says that is running behind schedule, and will no longer be unveiled in June. Furthermore, Gurman says that employees within Apples AI division now believe that a more conversational version of Siri wont reach consumers until iOS 20 at best.As for the three Siri features anticipated to debut in iOS 18, Gurman says Apple is still on track to release these features in May with iOS 18.5.Apple Intelligence in iOS 19Gurman reports that internal Apple data indicates that real world usage of Apple Intelligence is extremely low. This would suggest that the current feature set isnt necessarily resonating with consumers.Despite that, Gurman reports that Apple Intelligence might not necessarily include many improvements in iOS 19:Everything Ive heard suggests that iOS 19 will not include any significant consumer-facing changes to Apple Intelligence. A big reason for that is the amount of time Apple is still spending working to get the features announced last year out the door. Its challenging to move on to next years release before this years operating system updates haverolled out to customers.This is quite disappointing, but it makes sense given how far behind they are when it comes to releasing its promised Siri improvements. If this report holds up, this means we wont see meaningful new Apple Intelligence features until iOS 20 debuts in June of 2027.My favorite iPhone accessories on Amazon:Follow Michael:X/Twitter,Bluesky,InstagramAdd 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