Web Content Accessibility Guidelines (WCAG) 2.1 has become a proposed recommendation a while ago. This is possibly a last step before a standard becomes W3C recommendation. In short, this process is to confirm if required corrections are made. Here is what it means in the words of W3C.
Document maturity level: A Recommendation, plus a list of proposed corrections. The Working Group should also include a detailed description of how the Working Group plans to change the text of the Recommendation for each proposed correction.
Announcement: The Working Group must announce the Call for Review to other W3C groups, the public, and the Advisory Committee. This is not a formal Advisory Committee review. However, the announcement must clearly indicate that this is a proposal to make normative corrections to the Recommendation and must:
Purpose: At this step, W3C seeks confirmation of proposed corrections to a Recommendation.
Entrance criteria: The Working Group calls for review when, with respect to changes to the document, the group has fulfilled the same entrance criteria as for a Call for Review of a Proposed Recommendation.
Duration of the review: The announcement begins a review period that must last at least four weeks.
Ongoing work: Same as for a Proposed Edited Recommendation.
If there are no formal objections to the proposed corrections, W3C considers them normative. The Working Group must report formal objections to the Director, who assesses whether there is sufficient consensus to declare the proposed corrections to be normative.
So this should be final and final chance to have any say and contribute to WCAG 2.1. As I see it, there have been a lot of great efforts and WCAG 2.1 looks awesome. Why not we just start implementing it?
Gratitude to all those who have closely involved in putting these standards together.
Source: https://www.serveominclusion.com/2018/04/24/wcag-2-1-is-now-a-proposed-recommendation/
