Hi,
I'll be the release manager for Tails 2.2, which is a major release
scheduled for 2016-03-08. Note that there will be no Tails 2.1; for the
curious I suggest reading up on our versioning scheme:
https://tails.boum.org/contribute/release_schedule/#index4h1
The list of tickets targeting Tails 2.2 can be found here:
    https://labs.riseup.net/code/projects/tails/issues?query_id=191
182 tickets! And there are still ~70 tickets targeting 2.0, so the
number is even higher. Please see my other email with subject "Post-2.0
Readmine follow-ups"!
Without further ado, here's the preliminary release schedule for Tails 2.2:
* 2016-02-24:
   - Feature Freeze: All feature branches targeting Tails 2.2 should
     be merged into the `devel` branch by noon, CET. I'm open to make
     exceptions if you can be online and responsive during that
     afternoon, but ask me first!
   - Build and upload Tails 2.2~rc1.
   - Start testing Tails 2.2~rc1 during late CET if building the image
     went smoothly.
* 2016-02-25:
   - Finish testing Tails 2.2~rc1 by the afternoon, CET.
   - Release Tails 2.2~rc1.
* 2016-03-07:
  - All branches targeting Tails 2.2 *must* be merged into the `testing`
    branch by noon, CET.
  - The upcoming Tor Browser is hopefully out so we can import it.
  - Build and upload Tails 2.2 ISO image and IUKs.
  - Hopefully start testing Tails 2.2.
* 2016-03-08:
  - Finish testing Tails 2.2 by the afternoon, CET.
  - Release Tails 2.2 during late CET.
Testers, please let me know:
* if you are available on 2016-02-24, late CET
* if you are available on 2016-02-25, morning to afternoon, CET.
* if you are available on 2016-03-07, late CET
* if you are available on 2016-03-08, morning to afternoon, CET.
Cheers!