The Fujifilm XF 18-135mm f/3.5-5.6 R OIS WR lens is rumored to be coming this June. The lens previously expected to come late Spring around April / May.
Now, according to Fujirumors the weather sealed XF 18-135mm f/3.5-5.6 R OIS lens release date is set for June. The updated Fujifilm X-Mount lens roadmap for 2014-2015 includes five new lenses.
The Fujifilm X-T1 is bundled with an 18-55mm f/2.8-4 R LM OIS lens and it is not weathersealed. The upcoming Fujifilm XF 18-135mm f/3.5-5.6 R OIS will also be the first WR model to be announced this year.
Fujifilm XF 18-135mm f/3.5-5.6 R OIS Lens Coming This June
The other pair of weathersealed X-mount WR zoom lenses XF 16-55mm f/2.8 R OIS and XF 50-140mm f/2.8 will become available in September. In the meantime The TCL converter for the X100S should be available by end of April in Japan.