The company considered the new document and mobile capabilities significant enough to assign it a new 4.0 version number.

To recap, the company’s first production version, issued earlier this year, was version 3.0. Given that the company competes against legacy Exchange servers, the use of 3.0 as its first production version ironically mirrored the popular perception that Microsoft only gets products right at the 3.0 stage.

The new document Wiki editor hides the raw XHTML common to Wiki editors. The result is that you’re editing the Wiki as it would look, rather than through a code editor.

That means that, while the Ajax mashups may not be active during editing mode, you can see where they are and how they would look. Additionally, you can next other kinds of documents, like fully-functional spreadsheets, charts, or pictures.

Another feature in the Wiki creation feature is the ability to restrict read/write privileges only to named individuals, rather than broad groups which are the norm with Wiki tools.

Version 4.0 also adds native rendering on several mobile platforms. They include Symbian S60, which is supported on Nokia, Samsung, and NTT DoCoMo smart phones; Windows Mobile, which is supported by Motorola smart phones and some Palm Trio models;. And the Palm OS, which covers the rest of the Trio base.

At this point, Blackberry support is only via a third-party client add-on. The company hopes to conclude an agreement with RIM later this year to remedy the gap.

Finally, Zimbra 4.0 adds a text box that is similar to the old hot key features of DOS-based applications. If you have a specific task, like sending an email or text alert, you can press the tilde key to bring up a text command box where you simply type the type of task, the recipient of the message, and the content.