Well, Curve 8900 and Bold update their OS frequently without a stop! Not long before the OS 5.0.0.461 released, today Wind Hellas releases a new OS 5.0.0.509 for BlackBerry Curve 8900 and Bold 9000.
BlackBerry Handheld Software v5.0.0.860 (Multilanguage)
Package Version: 5.0.0.860
Consisting of:

Applications: 5.0.0.509
Software Platform: 5.2.0.47
File name: 8900M_PBr5.0.0_rel860_PL5.2.0.47_A5.0.0.509_Wind_Hellas.exe
File size: 127.84MB

BlackBerry Handheld Software v5.0.0.860 (Multilanguage)
Package Version: 5.0.0.860
Consisting of:

Applications: [...]

A quick share of our creative and useful app iFit launching on Blackberry App World(how to install the client refer this; get the OTA link here: OS 4.7 OS 4.6 OS 4.5 OS 4.2), with a lower price 7.99 USD compare with normal price 9.99 USD. Calling all MMMOOO BB fans go and have [...]

One of the best BlackBerry themes from MMMOOO - iBlackBerry theme - now totally upgrades with new elements and new features for all new phone models released recently. Horizontal scroll bar of application icons picked by yourself will show up on homescreen in all model versions, and a "Today Plus" area shows coming calendar events, [...]

We just released 8900 Curve and 8350i model of the well-reputed animated theme: Animate Dock. The new OS 4.6.1 brought us many new customizations in theme UI, BlackBerry rocks! For more info, check this post.
Now this theme supports all BlackBerry phones (OS4.2 or higher) except Storm, and Storm version is coming very soon. Pick it [...]

Want a full emulated Mac theme for your BlackBerry? This one is the best I have ever seen --

Dynamic dock that rolls like a real Mac! Check the video clip below.
Icons are arrangable, keep your favorite apps on dock.
You can easily change wallpapers and keep the upper bar and lower dock staying there.
there's [...]

MMMOOO team proudly accounced this cool BlackBerry animated theme with a light color scheme. Arrangeable icons listed on desktop in a vertical row, and rolls up and down when you touch the trackball!

Icons will fade out smoothly when rolling outside screen.
Big, full icons set for the Bold 9000. The desktop layout for the Bold is [...]

Brushed is another animation theme from MMMOOO team that looks pretty cool: cold metal doors will open/close in motion, when you unlocking/locking keyboard, or take back to desktop. The animations will play only once right after the triggered actions, then disappear.
This theme supported these BlackBerry models running OS4.2 or higher: 8100, 8200, 8300, 8700, 8800, [...]