Today Denon sent out the following to dealers regarding potential miss information regarding HEOS and SiriusXM connitivity.
You may have received an email from SiriusXM recently stating that your streaming player may not be able support the new SiriusXM feed after March 31, 2020. We are writing to assure you that latest software for all models with HEOS Built-in already supports the new SiriusXM feed.
To ensure you are running the latest HEOS device software and app, go to Settings > Software Update in the HEOS app. While you are there, turn on auto update to stay current with all the latest HEOS goodies."
For more information please go to thier FAQ Page