
The devs are apparently still working on additional optimizations. We are waiting for the v4.0.4 patch to be released next week. I have an open ticket with support regarding that. Memory footprint has been reduced, but some folks are still experiencing random crashes. Initial release was 4.0.0, but we are currently at release 4.0.3.

Huge list of content downloads that need to be individually unzipped and executed. The full comparison of the instruments included in each edition can be found here: Compare Versions ST4 content is just an addition to existing content. But they are not full replacements for the ST3 content library which you will still need to use to provide the core instrument collection of your SampleTank library. Many of the new ST4 instruments sound very, very good. ST4 MAX includes the entire ST3 MAX library content as separate installers. ST4 is compatible with ST3, Syntronik, and Philharmonik 2 content libraries.

The edit page has an improved layout, and additional new controls are available for the ST4 sample elements, including a new modulation section. The new multis page is borrowed from Syntronik. The on-board effects rack is very good, borrowing from T-Racks, Amplitube, and Syntronik. The new interface is resizable, so that is a huge improvement.
