The Finnish cell phone maker unleashed three new enterprise-centric devices at 3GSM today in Barcelona: an updated version of the E61, a new communicator called the E90, and the brand new phone-first E65.

To start, all three devices are based on the Symbian Series 60 smartphone platform and are geared toward enterprise use. Each of them features enhanced e-mail functionality and the robust platform to support just about any enterprise application you can throw at them. And all three operate across different continents using the quadband GSM and 3G network frequencies, providing fast broadband data connectivity with 3G WCDMA and WLAN. Each is shooting for a slightly different target user.

The E65 is a brand new slider phone. The sleek and compact design is sure to appeal to users who are more voice oriented than data oriented, as it comes with a regular keypad for data entry. Nokia says it was designed for easy access to the most frequently used applications with "One Touch" keys on the front. The lack of a qwerty keyboard will make responding to e-mails less appealing, but Nokia obviously has other solutions for heavy data users. Still, the Nokia E65 can be integrated with corporate telephony systems and also supports the most-used business and consumer e-mail solutions.

The E90 is a new take on Nokia's Communicator line of smartphones. Where the 9500 and 9300 Cmmunicators used the super-robust Symbian Series 80 platform, the E90 downgrades a little bit to Series 60. It has a standard keypad on the front and opens horizontally to reveal a full qwerty keypad for e-mailing, text messaging, and access to a nice, wide screen for browsing and application use. The overall package of the E90 is tidier, smaller, and looks a bit less intimidating than its older cousins. Setting it apart are its integrated GPS and mapping application, on-board FM radio and music player, and two cameras, one of which is a 3.2-megapixel camera with auto focus and flash, the other a user-facing camera for video calls.

Rounding out Nokia's enterprise line up is the revised E61i. The E61i refines the e-mail-specific form factor of the previous E62 and E61 with a slimmer profile and an on-board 2-megapixel camera. Nokia says the keyboard has been updated with new technology and the One Touch keys and the device also has been updated with an improved music player and video player.

No word yet on pricing and availability of these devices.