Found this link today for the Botanical Center Grand Opening. It starts Monday, October 11th.
Here is a link that might be useful: Botanical Center Grand Opening
I took my kids to visit today and they really enjoyed the new play equipment located throughout the park. They did lots of climbing and spinning around. If you go, be sure to walk all the way around the lake to see what's new. They've added a conifer garden southeast of the lake that's beautiful.