Never mind the date on the official download page, DivX Labs has officially released v1.0 of their ubiquitous mobile player for all S60 3rd Edition and 5th Edition smartphones (direct SISx links). Version 1.0 "has numerous updates and simplifications to the UI. It also has touch-screen support for S60 5th Edition users." Initial feedback shows that desktop class DivX files (unsurprisingly) generally have bitrates that are too high for the limited processor speed in most current Symbian handsets. A figure of 600kbps is recommended as a maximum.

From the announcement page (again, ignore the date):

"ATTENTION: We have released a new 1.0 version for Symbian S60 3rd and 5th edition phones. 

Even if your phone isn't officially DivX Certified, you may still be able to watch DivX® videos by downloading and installing the DivX Mobile Player. Find out below if your phone supports the DivX Mobile Player and follow the link to download according to your phone’s operating system.

DivX Mobile Player 1.0 is beta software available for a limited time only and will expire.
For the older 0.94 release, please scroll down to the bottom of the page.

If you are reading this page from your mobile phone, try using the Mobile website instead."

Comments welcome if you get a chance to try this out on your own DivX collection. I suspect that this player will be more use for playing custom-created content for mobile....