Fujifilm just discontinued the not-quite-popular X30, and while some might think this means an X40 is coming soon, they should think again. Fuji may never put another 2/3-inch sensor into an X-Series camera again.
Update: It seems that this rumor was off base. The latest word is that there is indeed a 2/3 sensor coming, but it will appear in a new XS2 fixed lens camera. The upcoming entry-level X-Series camera will continue to feature a APS-C-sized sensor. That makes a lot more sense.
We've heard that Fujifilm is primed to make some camera announcements this summer, and according to Digicame-Info one of those announcements may be a new entry-level X-mount mirrorless camera. The camera is expected to be announced in the summer (possibly June, according to PhotoRumors) and made available in the fall for anywhere between $550 and $700.
But it's not the price, release date, or even the existence of a potential entry-level mirrorless ILC from Fujifilm that has people talking. Instead, it's the rumor that the camera will come to market sporting a tiny 2/3-inch X-Trans CMOS sensor.
Fujifilm has released seven official sample photographs shot using the new X20, a slick little retro-styled compact camera with a 12MP 2/3-inch X-Trans CMOS sensor. The X-Trans sensors in Fujifilm's APS-C X-Series cameras (e.g. X-Pro1 and X-E1) are very highly regarded for their image quality and low light performance, so it's interesting to see how the same tech performs on a much smaller sensor size (APS-C sensors are about 6.5 times larger than the X20's 2/3 sensor).