Sony just “dropped” firmware version 1.90 for the PS3 in Japan. Expect it here any minute now. The change log shows that most of the improvements are mere cosmetic or otherwise fairly minor. Still, you’ll now be able to force 24Hz output for Blu-ray over the ol’ HDMI. CD audio output can now also be changed to 44.1/88.2/176/4kHz. You can also now change video setting while in-game. No more going back to the system settings while trying to get the picture to look just right.

Or, the full list

• Ability to rearrange games on the XMB
• Option menu now includes “eject disk”
• Press triangle to eject games/CDs/movies in the XMB
• XMB backgrounds
• Change the folder classification
• Emoticons
• Change CD output to 44.1/88.2/176.4kHz
• Force 24Hz output for Blu-ray over HDMI
• Change PS3 video settings in-game
• “Bit Mapping” in the “Music Setting”
• Save AVCHD type animations from a Memory Stick
• Change settings like upscaling while playing PS and PS2 games
• Add bookmarks
• Web browser security function in the browser’s tool section
• Avatar moves during audio visual chat

Emoticons!

Version 1.90 [Game Watch via Kotaku]