The Chrome OS Dev Channel has a new Chrome 69 build now available. The new build is the fourth Chrome 69-based build to land in what is considered the “alpha” testing channel. 69.0.3494.0 (Platform version: 10888.0.0) is the new build that you are looking for and it is available for the majority of devices in the channel now.
As you would expect for a build at this early stage, there are a lot of bug fixes and tweaks in this update according to the release notes. Doing a quick dive into them, I did not find any new features mentioned. This looks like a prep build to get it ready to go to Beta testing in the Chrome OS Beta Channel.
The big news of course with Chrome 69 for Chrome OS is expected to be Project Crostini. That is the code name for Linux app support in the platform and it has been in the Dev channel for months as the Chromium team gets it ready for prime time.
As previously posted, Chrome 69 is not expected to be in the Chrome OS Stable Channel until September 11, 2018. That means there is a fair amount of testing yet to go. Chrome 68 is the real key in all of this. That release is slated for release on July 31st, just a couple of weeks from now. Then there is a long stretch from then to September 11th for Chrome 69. That means we are likely to see one or two more Dev Channel builds before we see four, six or maybe more Beta builds once it lands in that channel. The takeaway: When Chrome 69 is released, it will be a heavily tested build when compared to others that have been released this year.