Back in April 2009 I wrote Move over Citrix! Microsoft and Quest form "a winning partnership" for desktop virtualization. This was when Microsoft started to embrace Quest as a desktop virtualization partner in addition to the love they heaped on Citrix. At the time Microsoft execs said (mostly off the record) that they needed to keep Citrix "honest," and really that having more than one go-to partner was better for them and better for the whole ecosystem.
After a year-and-a-half though, it seems like Microsoft is back to their old ways giving their love to Citrix leaving Quest to fend for themselves.
Citrix competes with Microsoft at the hypervisor level. Citrix competes with Microsoft in the app virtualization & streaming area. Citrix competes with Microsoft in the online meeting space. Yet Microsoft pushes them exclusively when they talk about desktop virtualization.
On the other hand, Quest has embraced Microsoft. They were the first to support Hyper-V. They were the first to show their product integrating with RemoteFX.
Yesterday I tweeted Man, Quest can't get no respect! In Chandra's post about RemoteFX, Quest was mentioned below Texas Instruments even!?! http://goo.gl/2AIiP
And then later I got an email from Waggener Edstrom (Microsoft's PR agency) making sure I saw Microsoft's latest blog posts on desktop virtualization (here and here). Both posts are full of references to Citrix and how great XenDesktop is. But neither post even mentioned Quest... Not even a cursory "and Quest does it too."
So I don't know what this "winning partnership" is that Microsoft and Quest formed, but from the looks of it, Microsoft has moved on and clearly doesn't care about Quest. Both of these blog posts (and the TechEd keynote, actually) flat out ignored them.