The wiki  was recently updated to direct
Simrel participants to use Juno SR2 and add the aggregator using the the
"4.2" stream of the b3 aggregator. (I just noticed a few days
ago, myself, that it was out of date).
The reason this is important is that
a new feature was recently added to the aggregator's model, that we will
take advantage of, where you can set "allowLegacySites" (the
default is true, to match existing default behavior, but we set it to false
for our SimRel aggregation). "Legacy" in this case, refers to
the old update manager site format. As I'm sure you all know, it has long
been a written rule that participating projects provide "optimized
p2 repositories", but now the tool will do a little more checking
for us. There has been a few times in the past, when a project mistakenly
published a site such that only the "site.xml" file was provided,
not a "content.jar/xml" file so this will simply help catch those
few mistakes as soon as they occur. (p2, and the aggregator, handle both
types of sites, but the site.xml update manager style is less efficient
and less rich).
But, it does require everyone have a
current version of the tool, or else your own "verifications"
in your own b3 aggregator editor, will fail on our Kepler model since we
now specify that attribute. (That is, it will fail right away, just because
it doesn't recognize that attribute of the model, not that there is anything
wrong with your contribution).
Thanks, (and, sorry for the short notice).
And, thanks to Thomas Hallgren for adding
the feature. (bug 389296)