0.5.8 is now out, with the fix. (Rumors of 0.5.9 were premature; we
were able to add the allow/deny fix to the already-planned 0.5.8
release.) As I mentioned in the announcement, we recommend that all
production sites update to 0.5.8, or pull the changes in from
v0.5.7.1. We'll post more information about the fix in a few days on
meteor-talk, to give our production users a chance to update.
Even without the allow/deny changes, 0.5.8 was a big release. Thanks
to everyone who helped with patches and feedback.