The announcement of the Nikon D3200, the WU-1a Wi-Fi module and maybe a new lens (or lenses) should take place on April 19th. For all US readers, the official press release should be published online tomorrow (Wednesday) around midnight.
Nikon may also announce the previous leaked Nikon AF-S DX 18-300mm f/3.5-5.6G ED VR or maybe even the 16-85mm DX and/or the 28mm f/1.8G FX lenses – I am just not sure at that point.