Apple Seeds Eighth Beta of macOS High Sierra to Developers [Update: Public Beta Available]

The GM is getting closer and closer. I have stayed away from the beta since I need my machine to be stable and don't want to bother running it on a partition. I know it's just going to be a refined version of Sierra but always love a new version of MacOS.

Look Up now does Dictionary, Knowledge (Wikipedia replacement), iTunes Store, Web Videos, App Store, Films, Twitter, Maps . . . according to whatever word is being looked up. Slick.

I think you could be in for a surprise soon.:D

I hope so!

sudo softwareupdate -ia --verbose

Shows that there are no updates available.I'm in the US on a 2017 MBP 15" w/ 3.1GHz and Radeon 560.
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High Sierra is getting a new file system. My questions relate to external drives. Does an external drive have to be upgraded to work with High Sierra? If an external drive is formatted with High Sierra, will that drive work on a Sierra computer?

No, external drives can still be on HFS+. If you manually change it to APFS, you can use it on High Sierra or Sierra, but the latter only works with APFS for non-boot and non-fusion drives.

not showing up here

Installation on Macbook Air Late 2010 VERY slow - at least three times originally indicated 41 minutes - but worth the tedious wait. To be fair, I only had about 10GB SSD spare and forgot to disconnect a USB 2.0 drive used for Time Machine backups, external screen via Mini DisplayPort to DVI adapter, external keyboard and mouse via Buffalo USB3.0 hub.

First boot screen after restart looks like a very dumbed-down, low resolution Apple boot screen with a fat sausage style progress bar. Don't worry, you'll get the original sleeker one back later. (This may have been due to my use of an external display throughout the upgrade.) Also, don't be tempted to give up at several stages where the same time to completion is indicated for up to 20 minutes. It gets you there in the end. Maybe best to leave it all going unattended so you don't stress out over these bugbears and holdups.

Practically all prior software - including surprisingly (given some contrary rumours) Aperture and Microsoft Office 2011 for Mac - seems to load and enable me to load and save changes, though I haven't touched more than 1% of features and functionality. Time Machine backups to USB 2.0 disk and Synology DS213j work fine, though I have not tried restorations!

Safari is indeed subjectively faster, I seem to have gained 1 to 2GB of SSD space and after letting Finder / Spotlight do its indexing, all seems OK with temperatures and fan speed (I use Macs Fan Control with Exhaust - Auto setting).

Only remaining - trivial - annoyance is the three-broken-chopstick App Store icon / logo, which looks like it belongs with the fat sausage style progress bar at the beginning of the upgrade process!