Something I saw yesterday at PASS: Quest now have support for monitoring SSAS from their “Spotlight on SQL Server Enterprise” product. See
http://www.quest.com/newsroom/news-releases-show.aspx?contentid=10602
http://www.quest.com/spotlight-on-SQL-Server-enterprise/features-benefits.aspx
It’s pretty basic at the moment – they capture some Perfmon counters and data from schema rowsets, but no trace data – and nowhere near as sophisticated as what SQLSentry have, but it’s good to see another vendor entering this market.