"Windows2012R2 stack on Bluemix"

Now, our company systems are consisted of Windows-Based (ASP.NET FWK 4.5, 4.6 even 3.5) almost 70%. And i heard Cloud Foundry have 3 stacks (ubuntu, centos and Windows2012R2). To tranfer from Legacy to Bluemix, some 3rd party solutions need Windows2012R2 stack because of Webform, NET 4.X libs etc. When can i get Windows2012R2 stack on Bluemix? is there any roadmap or something else? plz let me know. :-) (I've aleady checked by my bluemix ticket, so ticket suggest this site, https://ibmcloud.ideas,aha.io)