Audio Ease has released Altiverb 7 for MAC. Here's the details directly from them...
The Impulse response (sampled spaces) library is more accessible then ever because of Altiverb's new picture browser: quicker loading, organize-by-size, and single click favorites are among its features. Altiverb 7 looks and feels better. Often used controls all line up on the front, while the more exotic ones are in drawers beneath.
Keyword searching makes it easier to find the right space among the many hundreds of spaces Altiverb includes. Just type "brick studio UK" or
Altiverb 7 adds an algorithmic reverb that is closely fit to the impulse response. It can optionally add brightness and chaotic modulation in ways only synthetic reverb can while preserving the nature of convolution reverb.
The Impulse response library can be kept up to date from within the plug-in. The TDM structure has been heavily simplified, altiverb is now the only total recall convolution reverb (without the use of snapshots). It adds drag and drop impulse response making from sweeps, slate claps or anything experimental from piano chords to overhead thunder.
Altiverb 7 is fully backwards compatible: you can open up any old project and it will load and sound the same as Altiverb 6. Altiverb 7 supports 64 bits, is Intel Mac only for now, runs in all major VST Audio Unit and MAS hosts and in ProTools 8, 9 and 10 as a TDM plugin and as RTAS. Pricing and Availability:
The upgrade is free for all altiverbs purchased in 2010 or later: a grace period of close to two years! Otherwise the upgrade costs USD215 / EUR 159.