RCLB 3 will be a complete overhaul of the app from the ground-up. It's not about new features (not for this version), this is a modernisation of the app with 100% data compatibility (that's super super important). So, every thing you see has been cleaned up but under the hood, I've rebuilt it to be a 64-bit app, bug-fixed a ton of stuff and I've cleaned up lots of rough edges.
So, in summary, RVCLB is bug-fixed, suped-up and a rock-solid foundation that we can build new features upon in the future. RVCLB 3 is a completely free update for all current customers. I hope you'll like it!