Apple execs already said that there wont be any more keynotes in 2017.
2018 there will be one important step in the computer industry:
http://www.eedesignnewseurope.com/news/intel-will-open-release-thunderbolt-3-interface-spec-2018
Thunderbolt 3 will become open for all 3rd party makers. So, combining this to other info mentioned above, this is one of the possible scenarios:
- Apple will introduce new Mac Mini with a custom AMD APU that is similar to the Mobile Ryzen mentioned above, but also incorporates Apple Axx chip on the same SoC.
- It will be almost the same size as AppleTV
- It will run seamlessly two OS's in one machine: macOS and tvOS. Side-by-side.
- Mac Mini is also AppleTV. You get two machines with one.
- With Apple remote you can jump seamlessly between the two OS's or run AppleTV on a PiP mode on top of macOS.
- Axx will be also the I/O-chip: all Thunderbolt 3 ports and a SSD are connected to Apple Axx that encrypts the drive automatically. macOS talks with Axx as it was one the co-processor.
- Axx is also the security enclave for macOS.
- Siri also lives in Axx, but works seamlessly on both OS's.
- Two OS's share the same SSD. But with limited access to each others side. Thanks to APFS all this is possible.
- Still it is full blown Mac.
- This AMD/Apple Axx SoC is the death aria for Intel (in Apple's business) and Hackintoshes, but it'll take few years to get there.
More guesses:
Mac Mini (good), Ryzen 5 2500U 8GB RAM + Apple Axx 2GB RAM in a Soc, 1x ETH, 2x TB3/USB type-c, 256 SSD $499
Mac Mini (better), Ryzen 7 2700U 8GB RAM + Apple Axx 2GB RAM, 1x ETH, 2x TB3/USB type-c, 512 SSD $799
And a bonus: wireless charging works on top of Mac Mini.
Introduced in February 2018. Along with macOS 10.13.3.
** End of imagineering **