Huh. The dead links must have been due to a localized network issue - maybe caching on webservers or something. Once I vpn'd into work from my laptop, the links below brought up the kb articles I was interested in.
SQL Server 2014 CU7 seems to have arrived today! Yayy!
3046038 Cumulative Update 7 for SQL Server 2014
There are 3 included published fixes I am quite interested in(listed below).
3042544 FIX: A query that requires nested loops join takes longer to complete in SQL Server 2014
3053664 FIX: Improved memory management for columnstore indexes to deliver better query performance in SQL Server 2014
This one is definitely of interest - especially because as noted in the kb article, it addresses a performance regression introduced by the SQL Server 2014 RTM CU6 change below.
-3029977 FIX: OS error 665 when you execute DBCC CHECKDB command for database that contains columnstore index in SQL Server 2014
3048752 FIX: A SELECT query run as a parallel batch-mode scan may cause a deadlock situation in SQL Server 2014