Basic Island makes it another B&R announcement
Shhh! People will find out about my sweet spec target!
Investing in Snow-Covered Island? Smart.
This was expected. The announcement was actually a pretty clear 100% bet for "No changes" in Vintage as soon as they had that errata last announcement.
They said they wouldn't change anything before Eternal Weekend and, if they felt they needed to, they'd work a different schedule for Vintage (probably announcing it a few weeks ago or even setting a date right after EW). Since the format seems healthy enough, they didn't have to do either.