Can you actually update the game without losing your saved progress? I just don't want to have to play for hours and hours just to get creative mode in the new version. I mean, I will if I have to, I'd just prefer not to.
Gather unknown signals from deep, silent space · By
Though, it is recommended that you usually start anew with big updates. With all of the content and events that are usually added with each update, I would definitely recommend starting over when a big update comes out.
If it's small, like fixes and stuff, I could say you'd be fine. Though, it's rare for them not to push out fixes with content updates, and sometimes, old saves might not work well with future content, so it's always safer to start over.
Not saying you HAVE to start over. Just saying it's safer, and probably better to. Wouldn't want to miss those new events, would you? Either way, it's always up to you. Eventually, the story does end anyway, so you'd be repeating a lot of the same, at some point. At that point, you're better off playing Endless mode or something.
Just giving you some extra details for the road. No matter what, do what you're comfortable with.