VST 2.4 allows developers of third party plug-ins and VST instruments to build products that run natively on 64-bit platforms. Double precision (64-bit) floating point audio samples are also supported to allow even higher resolution audio processing with VST. The included Mini Host example application allows for testing of 64-bit plug-ins in a suitable environment, while the new VST Parameters Structure allows plug-in programmers to make the available parameters even easier for the end customer to find and utilize. The VST SDK has also been given a general overhaul for the 2.4 version, making it clearer and simpler to use.
The Developer SDK for VST 2.4 is available for download at www.steinberg.net