From my perspective, the soon to be "T2" makes the continued development of the X line completely unnecessary.
The X Vario and D Lux 109 is effectively duplicated by the T and the 18-56; the X2, XE, and X typ 113 is supplanted by the T and 23 mm.
An 18-200 zoom would also be able to supplant the V Lux 114.
I would suspect that the "T2" is going to have a built in EVF, more megapixels, and a superior auto focus system. Leica has already shown us the roadmap with the Q, so we have a glimpse as to what is probable.
The T line should be able to be 'everything for everyone' on the prosumer level, and it makes no sense to continue the X line. An ala carte type of menu and choices.
(Perhaps, even, the touch screen will become more of a hybrid system so that the T2 has more cross appeal to the old X users).
Anyhow, that's how I would think Leica is approaching its product development.