Ubisoft has released the financial report of its third-quarterly sales for the fiscal year of 2015-2016. In this report, they also talk about their plans for next fiscal year, and in that piece, they casually mention the existence of a second installment of Watch Dogs, but give no other information on it whatsoever. Since they have included it in their prognosis for next fiscal year, we can safely assume that it is set to launch at least before April 2017, because that is when the fiscal year ends. The other games they included in their prognosis are For Honor, South Park: Fractured but Whole, Ghost Recon Wildlands, and “a new high-potential AAA brand with strong digital live services,” whatever that may be.
Source: Euro Investor