There was an article leak caught by Nokishita that indicated the official announcement of the Fujifilm Fujinon GF 45-100mm f/4 R LM OIS WR lens that should happen in the next few days.
As FujiAddict points out, there is also a Fujifilm event scheduled for February 4th where we should see the announcement of the Fujifilm X-T4 and X100V cameras. The GF 45-100mm f/4 R LM OIS WR might also be announced at the February event, but I personally think it will happen earlier.
Via FujiAddict, Nokishita