Thomas,
I actually think the increased focus on Business Environment is a good thing. In the real world, projects rarely fail because someone couldn't calculate float or a critical path. They fail because of poor stakeholder alignment, changing business priorities, regulatory issues, market shifts, or failure to deliver value.
Some topics may have been reclassified, but the broader emphasis on business value, governance, change, and organizational strategy makes the PMP more reflective of what project managers actually deal with today. As someone from a tech startup background, you may find a lot of it already feels familiar.
And honestly, whether you decide to take the exam this month or next month is okay. The fundamentals of project management haven't changed overnight. Focus on understanding the concepts and how they apply in real-world situations, and you'll be in a good position regardless of which version of the exam you take.