Hello all,
Today we released Terraform v1.0.0! 
Terraform v1.0 is an unusual release in that its primary focus is on stability, and it represents the culmination of several years of work in previous major releases to make sure that the Terraform language and internal architecture will be a suitable foundation for forthcoming additions that will remain backward-compatible.
Terraform v1.0.0 intentionally has no significant changes compared to Terraform v0.15.5. You can consider the v1.0 series as a direct continuation of the v0.15 series.
There are no special steps to take if you are upgrading from the previous major release, Terraform v0.15.
For more information, please check out the 1.0 upgrade guide and see the v1.0 Compatibility Promises.