1.19 ETA June 7, FO 4.0.0-alpha.1 probably one or two days later (depends on CF).

MC 1.19.1 ETA June 28th delayed, FO some time later.

Edit: I think 1.19.1 will be released on July 26th.

Edit 2: now there will be 1.19.2

• Roadmap is here (things may be appended later as needed)
• FO stable ETA is August, more specifically whenever I'm confident that the chat reporting system is transparently explained and reasonably exploit-free.
• 3.x.x will be maintained throughout and slightly after the 4.x.x release
• There may be 4.x.x and 5.x.x, see #219
• Other things TBD

See also, how the previous major release progressed: #170