First of all, CyanogenMod 9 is not currently stable. It is in development progress for Samsung Galaxy Ace I and will be later ported for Galaxy Y when it reaches to stable version. There are already many improvements made, such as the performance, the user interface. Broadcom finally released the drivers for developing a stable Ice Cream Sandwich ROM (Android 4.0.4).
For any news about improvements made, check at bieltv.3's blogspot or galaxyyarchive.info
Developers currently working on it: bieltv.3, SpaceCaker, Lopicl.00
The ROM will be uploaded on XDA when it becomes stable.
We support the developers and we thank them for their hard work.
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Loving Foobar2000 Windows music player? Click here and perhaps we can have a version for Android.
You can press thanks if I was helpful.
dimsar2013 - XDA Developers Senior Member