An excellent early review of Thunderbird 1.5 by Steven J. Vaughan-Nichols for eWeek is on line now. This review points out the many improvements, and new features of version 1.5 vs the 1.0.x versions. While eWeek was only lukewarm on Thunderbird previous version, this review is VERY positive. Check it out here:
http://www.eweek.com/article2/0,1895,1901959,00.asp
Regards,
Sander Nyman
Source: OS2VOICE.org