We can show the customers which router versions they are using. The information can be sent to the usage reporting service via a HTTP header x-hive-gateway-name and x-hive-gateway-version.
Some possible values for x-hive-gateway-name:
apollo-gateway
apollo-router
hive-gateway
hive-router
grafbase-router
The data should be ingested into Clickhouse and it should be possible to filter data on the insights page based on that, as well as display which gateway versions are in use.