In the pipeline for some time, Acer has decided to make everything official and unveil a trio of new tablets. Mixing it up in the platform stakes, we’ll be seeing seven and ten-inch Android tablets as well as a ten-inch Windows 7 slate.

The ten-inch Windows 7 tablet will be the first of the three to go on sale, arriving in stores in February.

Starting with the smaller of the Android devices, the screen boasts a resolution of 1280 x 800, is 16:10 and has full touch capabilities. It has a front-facing camera and a dual-core processor, meaning Adobe Flash 10.1 is supported. The Acer tablet comes with both Wi-Fi and 3G connectivity and there’s DLNA connectivity on board.

As for the 10.1-inch Android tablet has a full capacitive screen, boasts Wi-Fi and 3G connectivity and is just 13.3mm thick. There is also an HDMI port on board and 1080p playback.

As TechRadar points out, there is a gyroscope on board for gaming purposes and Acer is guaranteeing you will be able to play games on the device that are “an entertainment experience on par with the best game consoles”. Both the Android models will be released here in April next year.

Finally, there is the 10.1-inch Windows 7 tablet which will be available from February. This has a full-size keyboard, a docking device, is only 15mm in depth and weighs less than a kilo. The tablet has a next-gen AMD chip inside and is boasting “a superior touch experience”. There are also two 1.3MP cameras, one rear and one front-facing, on board.

This is a sector dominated by Apple obviously, with a report over on Bloomberg noting how Steve Jobs and co enjoyed a 95% share of the tablet market last quarter, according to Strategy Analytics.

“This is a market that’s still not fully known, not fully satisfied,” Jim Wong, Acer’s head of information-technology products, said yesterday. Wong though will be hoping that the release of the three tablets doesn’t just see the company fighting for the remaining 5% of the market with Samsung’s Galaxy Tab, the upcoming RIM PlayBook as well as assorted tablet offerings from Toshiba and others.

In fact, by the end of next year they’re hoping to grab around 10% of worldwide tablet sales. Overall, Acer expects 40 million to 50 million tablets will be sold worldwide next year and with that number likely to continue to surge throughout the next few years, Acer will want to get a marker down as the affordable tablet go-to-guys.

Price-wise, they’re giving away nothing, though if you know Acer that won’t surprise you at all.