Nvidia's CEO reported on March 19th at the Investor presentation to analysts that he was disappointed in sales of Surface RT and Windows RT. He then asked the "The Outlook Gods for Windows Outlook on windows RT. Would make my life complete." Really strange sequence. Keeping the hope alive or a new iteration of Windows RT in the Fall.
Note: Bloomberg reported 1.05M in sales in 4.5 months for Surface RT, and 450K for Surface Pro in 1 months
Bestbuy bestseller rankings and number of comments on each model bare this out. Surface Pro will surpass Surface RT before too long.