I wouldn't say that I'm disappointed by the games that are supposed to come later this year. But, I will say that E3, aside from the XB show, provided me with zero excitement boost. Usually, E3 increases my excitement for the rest of the year. But, this year, aside from XB, nobody had any substantial surprise to reveal. And, even XB didn't really have much to show for this year. Horizon 4 looked extremely good. And, the immediate launch of Unravel that was announced at their show are all that moved the 2018 needle for me there.
I guess I could give Ubisoft a little credit too, for showing a cool looking Ass Creed.
Anyway, I think we all got a little spoiled in 2017. Nintendo and Sony both knocked it out of the park with software, and XB launched a beastly hardware upgrade. That same level of awesomeness just isn't coming for us this year. In fact, until the year that PS5 (and probably the new XB) launch, I doubt we'll have anything to rival 2017 in terms of gaming excitement.
With that said, 2018 has started strong. If RDR2, and most of the other big fall games actually make it out this year, it'll still be a great year for gaming.