The LE8 development is indeed ‘discontinued’ on forum.libreelec.tv, I guess the builds are, in general, considered stable, so development effort is now going into LE9.
Same happened during LE7 LE8 transition. Should critical issue arise, sure they will get fixed.
I think, equally, on VIM and VIM2, one can say LE8 is stable. Do you have any specific bugs or wishes?