The only odd part is RDJ as Iron Man in a Sony film - I knew he was in it, but figured it was a cameo. Sure looks like a much bigger role. I'm a little surprised that Sony gets to use IM, but apparently Marvel negotiated creative control of the film, so it's a lot more like a Marvel Studios movie released under the Sony name.
That's why in the trailer you first see the Sony logo and then you see the Marvel Studios logo. Sony distributes the picture, Marvel Studios gets creative control and makes a Spiderman movie that fits into their larger MCU story, Sony gets a new Spiderman trilogy out of the deal and down the line Marvel gets Spiderman in their other MCU movies.
It was a smart move by Sony. Just look at the "by Studio" indices over at Box Office Mojo and compare the Disney juggernaut verses Sony/Columbia. The top three pictures of Disney made $1.26B (Finding Dory, Civil War & Jungle Book), the top three Sony pictures made $332M - and those three movies are Ghostbusters, Angry Birds and Sausage Party - a poor-to-mediocre reboot that got widely panned and two computer animated movies.
Considering that this is Spiderman and not Doctor Strange or Antman, there is a solid chance that Spiderman: Homecoming will bring in at least $300M which is a win that Sony VERY desperately needs.