Splash Question

I’m new to kodi but figured the basics pretty quick. My sis in law and bf asked me to update their kodi on firestick. I fired up kodi and after messing seeing what add-ons they had, I found that it was updated to 17.1 on that date (I had it in my possession for a week before using the firestick and opening kodi).

Did kodi do an auto update?

The splash screen shows a captain America winter soldier pic. They told me that’s been up there since having kodi loaded. To me that’s confusing because I think the update should include the Krypton splash screen. What’s the deal with the splash screen? How can I change it to the krypton screen?

Thanks