It's a confusing landscape right now in tablet-land: Do you go 10-inch or 7-inch? Is iOS the answer, or do you go with Android or Windows 7? How about this for a strategy: just make all of them.
The Windows 7 tablet, coming in February, will run on a next-gen AMD processor and notably comes with its own docking keyboard, transforming it into a mini workstation. Wi-Fi and 3G will both be available, and twin front- and rear-facing 1.3-megapixel cameras will take care of any chat/snapshot needs.
The Android tablets will debut later--April--and will have slightly different qualities. The 10.1-inch Android will be powered by Nvidia's Tegra 2 processor, and will support Flash 10.1. It will also have HDMI-out, and front- and rear-facing cameras. The 7-incher will use a Qualcomm dual-core CPU, but will also support Flash. Both look to be more focused on games and media playback than full productivity, slotting in with Android tablets we've already seen.
Both Windows and Android tablets will be compatible with Acer's also-announced Clear.fi network, which will share content wirelessly in a home environment.
So, which is the right path: Android or Windows 7? From a consumer standpoint, there's no clear solution. Even more confusingly, Acer admitted during its press conference that it's still supporting the yet-to-be-released Google Chrome OS, and has plans for devices using Chrome OS as well. Apple's standpoint--one tablet, one iOS--seems a lot more sane by comparison.
Maybe Acer is hoping the market will make the decision in the long run as to what size or OS is better in tablets, but right now it looks like there will be a tablet for every occasion...and every OS.