I'd bet every last penny I had on there being a Series 4 in September
At least, for as long as Tim Cook is in post the annual upgrades for iPhone and Apple Watch will keep coming I think. Keeps the money rolling in!
There were rumblings of a new design for Series 3. Personally I think the current design has legs for many more years yet, just like it did for iPod, iPhone, iPad, and so on. The Watch is actually following the iPhone and iPad design trajectory quite well to be honest: getting fatter through each iteration as more things are squeezed in there (the 3G was thicker than the first iPhone; the 3rd generation iPad was significantly thicker than iPad 2). I think we're at peak thickness now.
So I'm expecting Series 4 to be thinner but not have a new design.
I'd love to see more health sensors but anything meaningful is probably a while off yet (e.g. blood pressure and sugar). But that certainly looks like a long term objective, for Apple Watch to become a comprehensive health companion.
I initially thought better battery life was a dead cert. But 1) the battery life on the Series 3 is already amazing, and 2) I think they would be happy to keep the battery life the same and make it thinner. I'd actually expect a smaller battery, honestly.
I'm sure we'll see some statistic on the slides about better cellular reception, attributed to a new modem and tweaked antenna design, but that probably won't translate to much real-world difference.
And, of course, a new, faster, and more power-efficient system-on-a-chip.
So in a bulleted list, I'd expect:
- A smaller battery, but the same or better quoted battery life
- Thinner, but the same overall design
- Tweaked cellular system (of negligible impact)
- Improved screen (thinner, more colourful, possibly higher resolution and brighter)
- Louder speaker for Siri
- Faster processor
- New colours, certainly of the ceramic Edition, but maybe of aluminium too
- Better iPhone independence in watchOS 5
What do you think?