I don't think there 17.0.3 ever will be available from openjdk.java.net; there's no LTS for upstream builds, and since Java 18 is out already, no further builds of 17 should be expected there. IMO, this warrants some clarification on that site though.
> The official OpenJDK project lists the planned release date of 17.0.3 as April 19th, still the latest available GA release is 17.0.2
> (https://wiki.openjdk.java.net/display/JDKUpdates/JDK+17u).
I don't think there 17.0.3 ever will be available from openjdk.java.net; there's no LTS for upstream builds, and since Java 18 is out already, no further builds of 17 should be expected there. IMO, this warrants some clarification on that site though.