The PDF here: has more information about EDGE.
The basic idea is that CISC/RISC architectures rely on storing intermediate data in registers (or in main memory on old skool CISC). EDGE bypasses registers: the output of one instruction is fed directly to the input of the next. No need to do register allocation while compiling. I'm still reading the PDF, this sounds like a really neat idea, though.
The only question is, will this be so much better than existing ISA's to eventually replace them? -- even if only for specific applications like high-performance computing.