That’s according to the Good E-Reader Blog:
The Sony PRS-G1 is basically the PRS-T1 but with 3G internet access which will see a release in Japan starting in the middle of November. It features a 6 inch e-ink pearl display with IR touch and has a resolution of 800×600 pixels. It connects up to the Sony Reader store in Japan, giving customers the advantage of downloading books, magazines, manga, anime and more! The 3G network supported is CDMA2000 1X, CDMA2000 1x EV-DO Rev. 0/Rev. A Up to 1.8Mbps uplink 3.1Mbps / up to down. It also has WIFI in it as well.