Avid, along with introducing Pro Tools 10, has introduced a new plugin format, AAX.
Here’s what they have to say about the AAX plugin format:
Expand your mixing palette with a wide variety of AAX (Avid Audio eXtension) sound processing and effects plug-ins, from lush convolution reverbs and vintage compressor emulations to powerful noise reduction tools. This new audio plug-in format gives you better workflows and sound parity when sharing sessions between DSP-accelerated and native-based Pro Tools systems.
AAX DSP requires a Pro Tools|HDX card for processing. AAX Native can be used with any Pro Tools 10 or Pro Tools HD 10 system or software, and relies on the power from your host computer. With this new architecture, AAX opens the door to greater technology advancements in the future.
Avid and many third-party audio plug-ins offer AAX-compatible versions, including those found here.(get the latest AAX compatibility details).
The key bit in there is “This new audio plug-in format gives you better workflows and sound parity when sharing sessions between DSP-accelerated and native-based Pro Tools systems.”
TDM & RTAS are still supported but are becoming legacy formats.
Details on compatible plugins at the Avid site. Expect lots of AAX announcements from third parties in the next few months.