Yes, that's exactly right. I want to get the foundation done first, which work can continue on now that I'm back from vacation, and once that's complete, more of the fun stuff and new content can come in later updates like Beta 2, 3, etc.
Soon, I'll likely be creating a test floor to test all of the work in a gameplay-like test environment (like the redone doors, sound awareness system, multi height character navigation, etc), which may be shown in Progress Update 19 (which is now planned to be published in late August or more likely September) alongside WIP versions of some of the redone Adventure Mode floors for the upcoming Beta 1 update.