If I don't know you, your company news won't interest me or anyone else who doesn't know you. You need to lure me with something useful or interesting first. (And it seems especially lame when those posts are lined up all in a row in Hootsuite.)
I'm not saying not to include some company news in your newsletter. I'm saying keep it brief and remember that only a segment of your readers will be interested. Leave it out of your call to action - on Twitter and on your website.
PS: Your website About page is a great place for your company news. You can link to that in your newsletter for those who want to know.
PSS: My friend Debi says, "It's not about YOU." Brian Reagan says, "Don't be the Me Monster" http://youtu.be/fVWHa5cpMZo - it's ok, go ahead and click it ;)