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Reader macros are also very handy. This is a feature unique to CL.

That doesn't seem correct. I know of at least two Scheme implementations that have reader macros (Racket and Chicken); there might be more. However, whether their reader macros are as powerful as CL's [1], I don't know.

[1] as demonstrated e.g. here: http://letoverlambda.com/index.cl/guest/chap4.html

These are implementation-specific extensions, not part of Scheme. Scheme doesn't have e.g. a GUI either (neither does CL) notwithstanding that specific Scheme and CL implementations have GUIs. It's borderline trivial to add reader macros to any implementation of any dialect of Lisp, but only in CL can you count on having them available.

Are they coming to Clojure soon or did I misinterpret Rich Hickey's latest interview?

He was talking about "tagged literals", not general reader macros. See http://dev.clojure.org/display/design/Tagged+Literals

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