Mozilla Corp. on Thursday gave users a first look at the next version of its Thunderbird e-mail client by releasing an alpha of v. 2.0. Thunderbird 2.0 Alpha 1, which can be downloaded in Windows, Linux, and Mac OS X editions, is suitable for developers only, Mozilla said on its Web site, although there are no actual barriers that block others from trying the software.
Alpha only means one thing… that you do not want to try using it as your primary client. However, if you are impatient and do want to give it a shot, you can grab it here.