I suspect it may have dual core fixes. That's been a running issue with android. I would also expect tweaks to the hw layer to support Quallcomm Snapdragon dual-core chips and perhaps the OMAP4 chip better. I wonder if 2.3.5 may even introduce more API changes, but possibly not, (like 2.3.3) to support dual core, Google Videos, DRM standardization and Honeycomb/Gingerbread dual-mode apps, as well as perhaps more standardized support for 3d displays/images/videos and of cours 960x540 displays, including PenTile type displays. Basically, stuff that is already in wide use in phones today, and could benefit from standardization.
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