I agree, that's how I understood those words as well.
Coincidentally, now that the documentation on some of the GF4 paperwork is out, Tesla is referencing Model 3, Model Y and "future product" production at the site as well. On the one hand, clearly not an announcement, just some language to get the permits covering all eventualities. However, if the 25k, smaller, cheaper car is to become reality, I always thought GF4 would be the primary production site for that. Not that China doesn't like smaller cars, but Europe would eat up a Golf sized hatchback for that money. RIP BMW 1 series.