Does “new save” mean game should be started from the beginning?
For this specific release, yes, it would be better to play it from a new save, due to the fact of it being a pre release, there are bugs that are being fixed.
v0.18.0 Pre-release 1.1 fixed many of the bugs of PR-1.0 but there could still be bugs, so watch out!
The only safe way to play with your old save will be when the full release is done, which is when we know it’s safe for old games!
But make sure to backup your saves anyways! Always good to make sure!