SKnote has released Stagespace, an algorithmic reverb with some special features like pitch shifting and envelope dynamic control.
Stagespace is a versatile and transparent reverb and is suitable for a lot of ambience, from small rooms to huge halls.
It is available with an introductory price of $19.99 for 32- and 64-bit Windows and Mac OS X in VST, AU and, soon, RTAS plug-in formats.