Update: PhoneScoop.com has posted a new article, detailing the upcoming products, including the new T237.
Today Sony Ericsson unveiled their 2004 product portfolio, a preview of most of their upcoming products for the year. Included are the T637, a version of the T630 that adds 850 MHz support (making it a lock for AT&T and Cingular), as well as the 850 MHz-supporting Z500, which is a version of the Z600 that trades Bluetooth for PTT.