I really look forward to deliver the Oracle Solaris keynote in Los Angeles, CA, this week, as part of the event series "Datacenter Transformation: Engineered for Innovation".
In fact, there are many of those being held in North America in the upcoming weeks. Here's the overview.
One event series with much more focus on Oracle Solaris itself, also on a more technical level, is titled "Oracle Solaris 11 Technology Forum". You can look up the upcoming events in North America with this search string on the Oracle Events web page.
Keep looking for those, as many of the events will be added shortly.
In the EMEA region, Oracle runs very similar events than the Technology Forum very soon, except they call it "Tech Days". For German speakers, there are several ones upcoming in Germany and Switzerland. The appropriate information can be found here.
Again, keep checking the Oracle events page, searching for "Solaris" (or any other product, product family, etc. that interests you), and chose your region, country, language, etc. Other great examples of these (related) event series are the "Extreme Performance Tour" going on globally right now, as well as the "Oracle Cloud Conference".
Oracle Field Marketing does a great job in organizing many many of those on an ongoing basis, somewhere