Microsoft has released Cumulative Update #2 for SQL Server 2014.

Important! This Cumulative Update fixes the data loss / corruption issue with online index rebuilds that I talked about in this blog post on sqlperformance.com.

• KB Article: KB #2967546
• 48 fixes listed publicly at time of publication (52 total)
• Build number is 12.0.2370
• Relevant for @@VERSION 12.0.2000 through 12.0.2369

(And no, they haven't fixed the license terms screen yet; it still makes it seem like an update for SQL Server 2014 Service Pack 1, which doesn't exist yet.)