You can still get LW 4.18, see sample image from this link:
http://www.gnutellaforums.com/window...lw-4-18-a.html
Yes those are LW specific changes, not wholesale Gnutella network changes. There's been a number of people not happy with the changes. I greatly suspect customer peer pressure will 'eventually' force them to revert many more things back to LW 4.18's style of operation, at least with having the choice of using those options.