Apple?
I think we can also sleep peacefully, those times are gone.
I still have the paper clip in LiquidMetal, I think it's the culmination of commercial research for Apple.
I disagree. They are doing a lot of R&D in many areas. Their continuous work in recycling, Health ML applications, semiconductors, and industrial design suggests they are still very much interested in pushing the limits.
The iPhone, and perhaps other HW, are now on 3-4yr cycle, and they are clearly dispensing the incrementally every year. This doesn't mean they don't have a vision of what the next iPhone cycle will look like. We're at/near the end of this cycle. iPhone 15 will likely be the start of the next cycle. Last time this happened, they have a phone that has very minor incremental changes, and the following year, it's mostly the same internals, but brand new form factor. (iPhone 5S, iPhone 8, iPhone 11 Pro)
This is also visible on their product line-up, and naming convention - especially if they replace the Pro Max with Ultra. It'll give them some room to showcase new tech, while still maintaining a range of prices and capabilities.
iPhone SE (1yr behind, budget)
iPhone (Standard)
iPhone Plus (Standard, but bigger)
iPhone Pro (1yr ahead)
iPhone Ultra (2yr ahead, also bigger and best)