A few months ago, a Ghost Recon Wildlands updated dropped hints that pretty much everyone took to mean a new Tom Clancy game would soon be announced. It's taken some time, but it looks like those teasers are paying off in the very near future. Another hint has dropped in the latest update, and it points to an announcement one week from today.
The original teaser pointed to a fictional organisation called Skell Technology, and the latest – noted by YouTuber coreross – shows an invitation to an event called Skell Con, set to take place on May 9, 2019. The time for that event is set at 11:30 PDT / 14:30 PDT / 19:30 BST, so you'll probably want to tune into Ubisoft's usual channels around that time.
https://www.pcgamesn.com/new-tom-clancy-game