Wrapping up early could mean a lot of things, including but not limited to:
She found her winner earlier than expected and sent everyone home.
She realized the show wasn't working for her and ended the season ahead of schedule.
She sent multiple people home on a date that typically only sends 1 person packing (think: fantasy suites), pushing the timeline up.
TBD on what happened here, but Katie is back on Instagram and just posted footage of herself on a vacation, making it very clear that there is *not* a ring on her finger:
Instagram
While this post seems to imply that Katie didn't get engaged on