Nokia released a new major firmware for Nokia 5800 XM (RM 356).

current version now: V51.0.006

 

the new firmware should be available in a few days via NSU or OTA.  

improvements and changes in this firmware for Nokia 5800XM:

- Improved Mail for Exchange

- Improved video calls

- Improved browser

- Improved Performance

if you find more changes or updates for this release, post a comment below.

thanks :-)

UPDATE: [10.08.2010] 

Nokia released a new major firmware for the LTA Version Nokia 5800 XM (RM 428), too.  the current version now: V51.2.007

the following product codes are available atm:

• - 0561618
• - 0561619
• - 0574994

the changelog is the same as for the Nokia 5800 XM RM-356.