LOA 17 announcement issued April 3rd 2019 which mandates that the eventual PBS agreement be voted on by the pilot group on page 4 paragraph 3.
As well as the memorandum of understanding on PBS issued April 3rd 2019 which specifies that parallel bidding and implementation of PBS may not begin until negotiations are complete.
You can find both of these in the ALPA section of your Comply 365 under the LOA and MOU folders respectively.
If you have an actual announcement from the Union or Company regarding PBS more recent than these agreements, then by all means share it with the group.