I have an iPad2 and am using the EOS Remote for iPhones. Works fine.
I understand an iPad HD version of EOS Remote is coming at some point.
Bodies: 6D, EOS-M
Lenses: Rokinon 14mm 2.8, 50mm 1.4, 85mm 1.8, 100mm 2.8L IS Macro, 135mm 2.0L, 24-70mm 2.8L II, 70-200mm 2.8L IS II, EF-M 22 2.0, EF-M 18-55mm, Extender EF 2xIII; Speedlites: 600EX-RT(2x), 430EX II, 90EX