Hi, we are planning to upgrade from 2014 SP3 to 2015 SP3 in a couple weeks and I wanted to know for certain about client/server version capabilities.  I had previously read that although Workgroup requires matching versions the Enterprise product does not and that older clients can connect to newer servers, but I'm unable to find a current and definitive answer.  Due to time zone issues it is likely that on Monday morning post upgrade we we still have a couple 2014 clients overseas that try to connect to the vault and if I could let them work that way for a few hours that would be great.  Does anyone have experience with a 2014 client and a 2015 server, or how about a 2015 client and a 2014 server as preemptive upgrade?

Thanks