Update: 0.9.128.14 seems to be an update for the beta channel only (which is the the default chanel right now). If you've switched to dev channel, you won't see 0.9.128.14 but you will be getting 0.10.xxx.x updates which are more cutting edge.
Google is in the process of pushing out an update to Chrome OS on the Cr-48. This updates from 0.9.128.12 to 0.9.128.14. The update file weighs in at just 5mb. No formal Changelog has been released for the full Chrome OS system but the Chrome Browser Releases blog does show the browser changes in this update, one of them a critical security fix. Also, digging through the Chromium Issues site shows that an issue preventing Google Apps users with a period in their username from logging in has been fixed. It seems an audio garbling bug has crept in somewhere. The current workaround is to just reboot the Cr-48 when the garbling starts. Hopefully we'll see a fix out soon.
Notice any other changes in 0.9.128.14? Any comments on your upgrade experiences? Let us know in the comments!