Hello,
Thank you for the question.
Please note that RMS is not discontinued, it is simply no longer in mainstream support. This simply means that there will be no new customers, but existing customer's on a active support plan can purchase additional Store Operations and Headquarters licenses.
In addition, no additional updates for RMs are expected, unless a major security flaw is identified.
Thank you,
Scott Wardzinski
Microsoft Dynamics RMS & POS Support Engineer
