Future of lazyload attribute | [ResourcePriorities]

Hi to all !
While no single topic from archiv search results isn't available today 
with internal server error, i decided to ask about:

I would like to know, what future is waiting for the lazyload attribute 
in the W3C standard? This documentation 
<https://w3c.github.io/web-performance/specs/ResourcePriorities/Overview.html> 
means it would be abandoned, but another one 
<https://dvcs.w3.org/hg/webperf/raw-file/tip/specs/ResourcePriorities/Overview.html> 
means not. Many web docs refer to the cited documentation, meaning, it 
would be the state of the art in HTML5, and, while only IE11 supports it 
natively, other browser would catch up. This "abandoned" alert makes the 
perplexity perfect.

Thank you for any further informations and
best regards from Berlin
Evgeniy