Not to be outdone by Canon's 4,560,000 ISO sensor equipped ME20F-SH camera. Sony is showcasing a new high sensitivity sensors called STARVIS, which looks to be for surveillance applications, but I'd imagine such technology will make its way to other image sensors in Sony's lineup.
The STARVIS is back-illuminated pixel technology used in CMOS image sensors for surveillance camera applications. It features a sensitivity of 2000 mV or more per 1 µm2 (color product, when imaging with a 706 cd/m2 light source, F5.6 in 1 s accumulation equivalent), and realizes high picture quality in the visible-light and near infrared light regions.
A video demonstration of the new sensors capabilities is available after the break.