SwiftKey X and its tablet-optimized brother also "learn" by analyzing your typing style in Gmail, Twitter, and Facebook, as well as monitor your precision and adjust themselves accordingly to improve key prediction and accuracy. Much like the beta version, SwiftKey X for phones also offers an updated installer, advanced settings, and new theme options.
SwiftKey Tablet X addresses a major issue with thumb typing on a large display by splitting the keys and pushing them to each side of the screen, much like Thumb Keyboard. While SwiftKey Tablet X may have a similar layout to Thumb Keyboard, using it is a different experience altogether. It takes up a bit more vertical space on the screen, and some of the key placements are different, which led me to both negative and positive feelings about it. I found that the 'backspace' key is in a much more intuitive place versus Thumb Keyboard, whereas the period is in a much more awkward position.
All-in-all, these are both great keyboards once you adjust to the slight learning curve, and if you're already SwiftKey fan, then you'll most likely welcome the upgrades. They offer a much more thorough installer than other keyboards I've used, as well as support 22 different languages and the ability to use up to three languages simultaneously, making them great for the multilingual among us.
Both SwiftKey X and SwiftKey Tablet X are available for $1.99 in the Android Market for the next two days only, after that they'll jump up to $3.99 and $4.99 respectively.