Starting March 23rd Dell will deliver ThinOS 9.1.1131 directly from the factory. All new devices will now have 9.1 pre-installed.
You can still get devices with 8.6 until June 22nd. However, you have to make sure to order them that way. If you do not say anything, you will get 9.1 now.
Along with this factory change, all new clients will get delivered in a single multilingual PCoIP image. There is no special ordering process needed anymore. PCoIP is now included in every new order by default.