Emacs 26 introduces records, which have a print representation
<http://git.savannah.gnu.org/cgit/emacs.git/tree/doc/lispref/records.texi#n27>
starting with `#s`, followed by a list of contents.

This seems similar to the print representation of hash tables:

(make-hash-table)
;; => #s(hash-table size 65 test eql rehash-size 1.5 rehash-threshold 0.8
data ( ...))

Is this merely "coincidence", or is there some deeper meaning? If not,
isn't it confusing to have two different objects w/ such similar print
representations?