WEAVE is the next-generation wide-field survey facility for the William 
Herschel Telescope (WHT). WEAVE will provide the instrument required for 
full scientific exploitation of the Gaia, LOFAR, and APERTIF surveys in 
the Northern Hemisphere. WEAVE is a multi-object and 
multi-integral-field-unit (IFU) facility utilizing a large, new 
2-degree-diameter prime focus corrector at the WHT with a pick-and-place
fibre positioner system hosting nearly 1000 multi-object fibres or 20 
mini-IFUs for each observation, or a single wide-field IFU. The fibres are 
fed into a dual-beam spectrograph located in the GHRIL enclosure on the 
WHT's Nasmyth platform. The spectrograph records nearly 1000 spectra 
simultaneously at a resolution of R~5000 over an instantenous wavelength 
range of 366-959 nm or at a resolution of R~20000 over two more-limited 
wavelength ranges. WEAVE will be on sky in early 2019 to provide complete 
phase-space coordinates of more than 5 million stars in the northern sky 
selected with ESO’s Gaia satellite, distances and properties of galaxies 
selected from the low-frequency radio-wave surveys being conducted with
LOFAR, “three-dimensional" spectroscopy of galaxies selected from surveys 
using the new Apertif focal plane array at the Westerbork Radio Synthesis 
Telescope, deep surveys of galaxy clusters and moderate-redshift galaxies, 
and the scale of the Universe at z~2-4 from quasar absorption lines. In 
this talk I will discuss WEAVE's current status of the instrument 
development and science preparation.