$ eix -cI alsa-
[U] media-libs/alsa-lib (1.0.25-r1@29.02.2012 -> (~)1.0.26): Advanced Linux Sound Architecture Library
[I] media-sound/alsa-headers (1.0.25@29.02.2012): Header files for Advanced Linux Sound Architecture kernel modules
[U] media-sound/alsa-utils (1.0.25-r3(0.9)@16.08.2012 -> (~)1.0.26(0.9)): Advanced Linux Sound Architecture Utils (alsactl, alsamixer, etc.)
Сабж.
UPD: таки вышла:
http://www.alsa-project.org/main/index.php/Changes_v1.0.25_v1.0.26