This is a limited time thing, according to the e-mail from the Bedroom Producers Blog.
But if you don’t already have a good limiter plugin in your arsenal, check it out.
I installed it and tried it out, and the user interface is really helpful for modern mastering. As for the sound, if you can hear a limiter working it’s never a good thing. What you aim for is to hit your target loudness without trashing your mix.
It has something every mastering limiter should have, which is a switch to compare the output to the input, matching the levels. It also has a button that lets you hear the processing without the input signal, which is good for learning how it is changing the mix in the process of limiting.