My recommendation: don't.
I would steer clear of 12.5. It has been out for two months and multiple stability / compatibility issues have already been uncovered. Wait at least until there is a major service release, and even then, I'd recommend very thoroughly testing it before installing. If you're aiming for August, you're probably better off with 12.4. Additionally, with 12.5, *all* dimensions export as text (this can't be changed) and all expressions export as a number only if they are explicitly formatted as a number in the "Number settings" tab. Formatting as Num() in the expression itself isn't enough, which means you can no longer export expressions as numbers if they are dynamically formatted (e.g. the same column might have different formats based on the content). This is a "feature", not a bug, supposedly.
I'm coming off a failed upgrade to 12.5 where we had too many major issues (including the NPrinting and qv.exe issues in the linked post) and had to roll back to our previous version. Knowing what I do today, I recommend going with an older, stable version rather than one that clearly doesn't work well.
