I signed up, got the e-mail, then it told me that I wasn't using an android phone on the browser...
From the Beta FAQ
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I click the link in my activation email to download Swype, but I'm told that my phone is not an Android device, even though it is! What do I do?
This message means that you may have your brower in "desktop mode", or are using something other than the Android default browser (like Skyfire or Opera Mini). To turn the Mobile View setting back on in the Android browser - Open your browser settings (click menu > more > settings) and locate the option for "Mobile view." Click the checkmark next Mobile View if it is unchecked and retry the download link from your email. If the setting is enabled and you are still getting this error, please email androidbeta@swype.com.