Google says that it can achieve the same by “re-architecting Android to make it easier, faster and less costly for manufacturers to update devices to a new version of Android.” So, Google will separate out the vendor implementation section controlled by chip makers.
“With a stable vendor interface providing access to the hardware-specific parts of Android, device makers can choose to deliver a new Android release to consumers by just updating the Android OS framework without any additional work required from the silicon manufacturers,” says Google.
The Project Treble is already integrated into the Android O Developer Preview. In the past as well, Google started various projects to fasten the Android OS upgrades, but all of them went in vain. Hopefully, the Project Treble should solve the issue.