Apple recently released macOS 10.14 Mojove. At the time of this writing, MacLab is advising against performing this upgrade on a Mac in a production environment. There are issues to work out and we believe others yet to uncover. Code42 just announced an issue with Crashplan backup that requires manual intervention. If you have already upgraded to 10.14 and MacLab is providing your backup, please follow these instructions to make certain your important files continue to back up.
If you buy a new Mac with Mojave installed you may not have a choice moving forward, so please be careful to check all applications for capability.