KResearch has released the KR-Reverb FS version 1.1.0, a free reverb processor.
Features:

Adjustable Early Reflections Size
Adjustable Late reflections size
Adjustable Diffusion control
Adjustable Decay control
Adjustable Listener position control
Dry/Wet Mix adjustment.
Host Sampling Frequency up to 96KHz
For Microsoft Windows OS (VST)
Suitable for all Pentium CPUs
Mac OS X (AU UB,VST MAC)
Support for User definable presets
(Save & Load) via Host interface

It’s available for [...]

This is a demonstration video showing real-time 3D acoustic rendering, using the Phoenix gaming engine.
Developer David Rosen discusses this in depth in his paper Real-time 3D Acoustics Rendering:
Abstract
It is common for real-time systems to render 3D sounds by simply panning the sound from left to right and adjusting the volume based on distance. This is [...]

Stretta got his hands on the new Tiptop Audio Z5000, a modular analog CV-friendly DSP effects processor, and says “Go buy one”:
What the world needs is a Eurorack-format DSP with CV control. Along comes the Tiptop Audio Z5000. First of all, it is in stock, you can buy it now. None of this, announce, wait [...]

Numerical Responses has released Hollywood Impulse Responses (HIR), inspired by the ambience of 20 major Hollywood blockbuster films released between 1977-2006.
I don’t know abou you, but “Impulse Response” sounds like one of those 80’s erotic thrillers that involved a guy cheating on his wife with a hot ultra-babe, only to find out that she was [...]

VRSonic has released VibeStudio 1.0b1, a professional 3D spatial audio design suite that provides the ability to both create dynamic audio content and compose spatial audio scenes.

Description:
VibeStudio 1.0b1 gives you the power to design professional quality spatial audio for immersive environments. VibeStudio is the first suite specifically built for both content design and rendering of [...]

Forever For Now has released the Reverse Sampler 2 Audio Unit, the latest version of their popular reverse delay effect. The new version has new features, refinements and usability improvements.
Reverse Sampler 2 is a real-time reverse delay Audio Unit effect. Reverse Sampler 2 makes use of the industry standard generic Cocoa and Carbon graphical interface [...]

Soundcraft has announced the extension of its multipurpose mixer range with three new FX models–the FX16ii, EFX and MFX–each featuring 32 Lexicon 24-bit digital effects.
The new models use the same AudioDNA processor found in many Lexicon and DigiTech outboard products, including the highly respected Lexicon MX500. The consoles also offer a user settings store function, [...]

Best Service have released Halls of Fame, a collection of impulse responses from the world‘s most famous reverb units.
Description:
This collection of IRs from the world‘s most famous reverb units takes your convolution reverb plugin to the next level. Produced on state-of-the-art equipment for maximum resolution, ultra-low noise levels and pristine, transparent sound quality.
Using tailor-made test [...]

QuikQuak has announced version 2.81 of RaySpace.
New features since 2.7:

Sound ray visualiser. Watch the sound traverse the rooms with a time changable dial
Scattering algorithm enhanced, with fewer ray losses, and greater random behaviour
Reset factory preset function
Stereo width effecting dry signal bug fix
Updated manual screens, and small GUI changes
Dry signal bug fix
Crash fix on some Mac [...]

Studiodevices has released Reflections LE, an inexpensive convolution reverb VST-plug-in including 500 MB of studio impulse-responses of world-class hardware and selected real rooms and ambiences in 24-bit quality.
Reflections LE is a simple convolution reverberator that features low latency down to 16 samples and even a zero-latency mode. The 32 Bit high optimized algorithm uses SSE [...]

Musikmesse: This could be incredibly cool if they get it right - one of the most revered effects ever made, the Roland RE-201 Space Echo, has been reborn as the BOSS RE-20 Twin Pedal.
Features:

Roland and BOSS have recreated the legendary spacious, analog tone of the original Space Echo.
Faithful modeling of the RE-201’s tape [...]

Audio Ease has released impulse responses of the home of the Los Angeles Philharmonic: Walt Disney Concert hall.
The modern hall opened on October 23, 2003, and while the architecture evoked mixed opinions, the acoustics of the concert hall were widely praised in contrast to its predecessor, the Dorothy Chandler Pavilion. This IR release is as [...]

A download for the new version of IK’s Classik Studio Reverb 1.1 is now available, providing compatibility for IK registered users with Mac Intel Systems. CSR users may download this software update for free and will no longer require a USB iKey or dongle.
In addition to Mac Intel compatibility and dongle-free operation, CSR 1.1 is [...]

Wave Arts has introduced Universal Binary versions of TrackPlug 4, MasterVerb 4 and WaveSurround 4 in the VST and Audio Unit formats, “Due to popular demand”.
We’re not sure about this, but we figure “due to popular demand” means that no one will buy your Mac software if it doesn’t run on any current Mac.

2007 NAMM Show: Lexicon introduced the MX300 Stereo Reverb Effects Processor. This new single rack-space, 2-in, 2-out unit combines an intuitive front-panel design with Lexicon’s “Hardware Plug-In” technology, a unique USB connection and VST/AU interface for use with software recording platforms.
Featuring a wide array of rich, complex reverb algorithms, delays, effects and dbx Professional Products [...]