Когда есть существенная информация о обновлениях, всегда новость пишу полную, например по 4.0.1:
http://www.capture.ru/news1/news_2051.html
или совсем немного информации, то:
http://www.capture.ru/news1/news_2205.html

По Soundbooth там несущественные обновления:
Improved the product's stability and performance when playing and exporting video.
Resolved a problem where Adobe Flash® would not always refresh the audio after ASND files with snapshots were edited and resaved from Soundbooth.
Restored the ability to save to compressed WAV formats on Windows.
Improved the performance and ease of use of Adobe Resource Central.
Improved the product's reliability when previewing a captured noise profile.
Increased the product's stability when performing actions like zooming, scrubbing, and switching between assets during playback.
Restored the ability to save 6-channel audio files as 6-channel WAV or AIF files.
Corrected a problem where clips with fade-outs would be silent after saving ASND documents.
Resolved a problem where exporting video as MPEG-4 created video files that imported at the wrong length.
Resolved an issue where Soundbooth would crash when exporting a clip mixdown into audio-only video formats.

Если кому-то интересно, то сделаю новость полную сегодня...