Just to be clear: Are you saying that it might be best to leave out
the until-build attribute completely?
If you do know that the API has changed, and have multiple versions of the
plugin compatible with different API versions, then the version for the old
API must have the until-build set, in order for all users to get the correct
If you simply have a plugin that works with the latest version, then it's
best to leave out the until-build.
(Right now there's some extra problems because the plugin manager Web site
doesn't handle 90.xxx build numbers correctly just yet, but we're working
on solving this.)
"Develop with Pleasure!"