Mashable caught the first screenshots of the new Contributors feature allowing a pseudo dashboard for multiple people to post to a single account with varying rights. The article does a good description of the feature sets.
Caption courtesy Mashable posting
My opinion is that Twitter is too late to the game in the corporate space allowing third-party developers to overtake this area quite some time ago. The web interface that Twitter offers by default, with a new contributor toolbar or not, is not condusive to performing long term work and management in the Twitter stream. Missing is a wide array of tools needed to watch, forward, queue and otherwise control a corporate contributor toolset.
Twitter would have better luck purchasing one of the third-party developers like TweetFunnel, TweetRiver or Cotweet that have built a service, with subscribers, around this idea with more advanced tools and controls.
Twitter has slacked in making moves to purchase some of the add-on tools that have been created and with some remarkable success. This is purely a business decision and move that should have occurred some time ago to strengthen Twitter as a corporate tool and provide immediate means to monetize. I cannot see any company paying for this type of basic interface when other and better alternatives exist.
Disclosure: While I certainly don’t make any of these tools, the above links to the review site EverythingTwitter is also a site owned by me. They are not paid postings or reviews and we often slam them.