There are a few games set to release before the end of the year, as well as the promise that we'll get a free game once per month. With those, and the fact Google brought in 10 extra games the weekend before launch I expect it'll snowball. Here are the games for this year for reference:
Coming in 2019:
From what had happen with the '4k 60fps' streaming comment I hope they learn their lesson on gassing up the product and failing to deliver. Here's to hoping for those one free game a month.