It is with a lot of emotion that I discovered today that Project1 is no more automatically created in Project 2013 where it was always showing up at Project 2010 start-up!
2010 opening window:
2013 opening window:
For sure, if you're not selecting any project or pushing ESC in the backstage, Project 2013 will create a Project1 for you. But I see as a great improvement to be now able to open a project without always having this Project1 to close before!
I hope you share my enthusiasm!