Darwinianevolution said:
Ok, will we see some big exclusives for the service, or will they limit themselves to smaller projects and 3rd party software? Will they announce their own gaming studios making stuff for the service?

Well, we know that Jade Raymond is in charge of their games division, so I would assume that they will have some kind of 1st party and maybe some 3rd party exclusives as well. Back before Stadia was even officially announced there was a report from a reliable leaker that Google was looking to revive some of Sega's dormant classic IP's as exclusives for Stadia.