There are several stable nix distro's that will run great on an MK808 type device , and any of the cheap china sticks can , already
" Securely connect to Windows desktops and applications running on back-end systems from all leading infrastructure providers including Citrix, Microsoft and VMware."
its the SAME hardware china have been churning out for decades , but with the open licence model of android they finally have free and good quality software to run on their OEM hardware. the client software will be the same , i already run a VPN and secure desktop to my main device from my workshop , and fyi almost any android devices can already run this Https://play.google.com/store/apps/details?id=com.citrix.Receiver&hl=en
or if your virtualisation flavor is this https://play.google.com/store/apps/details?id=com.vmware.view.client.android&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS52bXdhcmUudmlldy5jbGllbnQuYW5kcm9pZCJd
Dell are just re-selling there will be next to nothing new about this device its bandwagon jumping at its finest what it is doing it making them viable for SME level business who source in bulk from dell ultra low cost skinny clients to connect to jump off boxes. with big name brand and big brand support , why buy the better unknown original when you can buy the brand name for twice the price .