6 or 7. Square and Nintendo showed up to give it a big finish but the early going was really padded and lots of cinematic trailers without gameplay.
And Bethesda needs to stop doing annual conferences. This is their 5th one and so far 2 have been good. The rest range from boring to bad because they just don't consistently have a conference's worth of content every year. So years like this they have one or two really good games and then the rest is just filler.