Update cloud-regions.asciidoc (#710)

Author: georgewallace

serverless/pages/cloud-regions.asciidoc

@@ -10,7 +10,7 @@ Elastic Cloud Serverless handles all hosting details for you. You are unable to
 
 [NOTE]
 ====
-Currently, a limited number of Amazon Web Services (AWS) and Microsoft Azure regions are available. More regions for AWS and Azure, as well as Google Cloud Platform (GCP), will be added in the future.
+Currently, a limited number of Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform (GCP) regions are available. More regions for AWS, Azure, and GCP, will be added in the future.
 ====
 
 [discrete]
@@ -47,3 +47,16 @@ The following Azure regions are currently available:
 | eastus
 | East US preview:[]
 |===
+
+[discrete]
+[[regions-gcp-regions]]
+## Google Cloud Platform (GCP) regions
+
+The following GCP regions are currently available:
+
+|===
+| Region| Name
+
+| us-central1 
+| Iowa preview:[] 
+|===