Multi-recipient SMS via Google Voice?

Google Voice has silently added a new feature, you can now text messages to multiple recipients. When you login to your Google Voice account on the web interface, you can now enter multiple numbers or contacts to send a text message to. No word on official announcement from Google yet.

For those of you who are new to Google Voice, You can make calls from your phone that show your Google Voice number as the caller ID. You can also listen to voicemail and read voicemail transcripts, send and receive text messages for free, and take advantage of the low international call rates offered by Google Voice.

(source)