Hi OP,
you can check out Fujirumors.com for up-to-date info on releases.
Last I checked, 55-200 will be out somewhere in April, with the 10-24, 27 2.8, 23 1.4, 56 1.4 later in the year.
Unfortunately I don't think a constant 2.8 zoom is on the road map. However the 18-55 is already a very...