For curious, several facts i noticed by running anaconda distributed shakti:

1) k7 implementation obviosly is completely different codebase from current kdb+. I ran the following query on kdb+ and k7

  a1:1000000?1000000;b1:1000000?1000000;
  \t select #a by b from (+`a`b!(a1;b1));

And difference seems to be in order of magnitude (k7 is 650 msec, kdb+ is 77 msec), also on k7, time increases for subsequent execution of same query ==> memory leak? Looks like it's very early stage.

2) null number (0N) and infinity are now represented as non-ascii symbols Ø and ∞, also parsed as such.

3) type operator (@) returns symbols (`i, `j) for ints and longs etc, was returning shorts before. Interesting how do we distinguish arrays/scalars now.

4) default numeric type (e.g. 12345) is now int, was long.

5) entering overflow numeric literal returns Ø, was throwing exception.

6) k in anaconda is not stripped 675K linux x64 executable, stripped is 220K, while kdb+ is 657K as sold.