The update patches and fixes a number of annoying glitches and bugs and adds new features. The update is just the first of many before the device's official commercial launch next year.
Changelog (via Phan):
Change to sync policy: require power + wifi for background uploads
Crash reporting
Incoming G+ notifications (direct shares, comments, +mentions), including ability to comment and +1
Incoming Hangout notifications
Transcription of queries & messages is now wicked-fast
Long-press to search from anywhere in the UI (no longer just from off)
International number dialing + SMS
Hop animation on disallowed swipes in the UI
New On-Head Detection calibration flow
Show device Serial Number on Device Info card
More reliable estimation of battery charge remaining
New recipient-list mosaic
To update, you must plug the glasses into a charger first, adds Google.
Written by: Andre Yoskowitz @ 8 May 2013 15:21