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A preview of Spring 6 is expected to be available early next late this year with the final release not expected until Q4 2022, and once this drops we will be setting up a test branch of IdP V4 using it to make sure we are on track to support it, which will necessitate moving all our javax.servlet references to the jakarta packages. We will have to make sure all our dependencies have also made this move, or find alternatives. One of the open questions we have not answered yet is the status of Spring Web Flow. Conservatively speaking, we’re expecting we may have to adopt that code ourselves.
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Thus, our tentative plan right now is that IdP V5 is likely to be deferred until late 2022 or early 2023, with a move to Java 17, Spring 6, and Jetty 11 as the baseline components at that time. Moving to Java 17 and Jetty 10 in the short run are expected to facilitate that eventual upgrade. We will most likely to deliver at least one core update to V4.2 between now and then, but nothing urgent is driving that for the moment.
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