Call out known spec problems to be addressed in the future

littlebtc · Feb 5, 2018 · 1970e38 · 1970e38
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commit 1970e38
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diff --git a/1.3/spec.md b/1.3/spec.md
@@ -379,3 +379,15 @@ have the following metadata table:
     }
 
 ```
+
+## Future directions
+
+In a future revision of this specification, the `metadata` table
+will contain a `compression` row to indicate the type of compression
+(if any) that has been applied to tile data.
+
+In a future revision of this specification, the `bounds`, `minzoom`,
+and `maxzoom` rows of the `metadata` table will be mandatory.
+
+A future revision of this specification will delegate the description
+of the `json` row of the `metadata` table to an external specification.