Garmin has been spotted preparing a new device for release. Under development as 'A04968', the unnamed device has been speculated to be the Forerunner 975. Early evidence suggests otherwise, though.https://www.notebookcheck.net/Garmin-certifies-new-mystery-device-with-rumours-abound-of-Forerunner-975-release.975998.0.html
I'd bet, since golf season is nearly here, it'll be the replacement for the S70, which has been discounted nearly everywhere recently, with no new stock coming in.