These are two predictions for E3 this year. Announcement of a new Splinter Cell focused on xbox in some way. So either exclusive, timed exclusive to xbox/pc with ps4 later or just Microsoft giving it a big push with exclusive content deal.
Second prediction is Nintendo announcing a Metroid for the Switch. Set to release in 2018. I believe a project like this would have been planned for the Wii U but they decided to push it back when they realised it was going to flop.