The Sound Guy has released ReSpatializer, an advanced panning, surround sound and spatialization plug-in. ReSpatializer supports up to eight input channels, each of which can be individually positioned.
Features:

Selection of angle, spread and spin for each source
LFE (low-frequency effect) tools
16 different output formats
Host tempo sync for source rotation

ReSpatializer is available in VST and Audio Unit formats. [...]

Neyrinck has introduced the Mix 51 Surround Panning and Mixing plug-in for Digidesign Pro Tools LE/M-Powered systems.
Mix 51 is a set of 5.1 surround panning and mixing RTAS plug-ins that allow you to take advantage of any Pro Tools system with six or more outputs such as Mbox 2 Pro, Digi 002/003, or M-Audio interfaces [...]

Music Unfolding has introduced, OttoVibe, an auto/touch effect with MIDI control. OttoVibe works much like an envelope-controlled filter, except that instead of a filter, it has a modulation section. The envelope controls the rate and depth of the modulation effect.

OttoVibe has a variety of effects including tremolo, vibrato, panning, and chorus. Altogether, OttoVibe has eight [...]