Hey there Chukwuemeka! Thanks so much for joining us here on Hashnode! Version 6.4 is not the same as 7. Foundation 7 is going to be released in the fall. The ZURB Foundation team always has our eyes fixed firmly forward, looking well beyond the present to figure out where we can take frontend development forward. It's the reason why we're the world's most advanced frontend framework. Foundation has changed the way we design and build the web in lots of ways, you can read a few of them here: zurb.com/blog/happy-birthday-foundation-five-year…
So while we have a strong vision and a solid roadmap for Foundation 7 in mind, we're also working tirelessly on point releases for 6, always looking for ways we can add new features, improve it, and fix bugs. Unlike other frameworks and open source projects, we don't want our users to be stuck in limbo. We want them to get a steady stream of solid, feature packed updates that give them the edge.
I hope you get a chance to check out Foundation 6.4 today, and it would be absolutely incredible for you to help contribute to 7! Check out our Github page to see the roadmap and get involved! https://github.com/zurb/foundation-sites