Fear not! The SSIS team has provided a set of updated links for SSIS 2016 SSDT for RC2. There’s other good information in that post. If you want to tinker with SSIS 2016 RC2, I encourage you to read it.
But Wait, There’s More
Once I’d done all this, I could create an SSIS project and add a Script Task to a package. But I could not open the Visual Studio Tools for Applications (VSTA) code editor. When I clicked the “Edit Script…” button in the Script Task Editor, nothing happened.
I contacted the SSIS Development Team (we hang out), and let them know what I was seeing. They are aware of the issue and sent the following screenshot
Sounds like there are still some kinks to work out before release.