When does Ink update?

Ink is nice but real stale on my site

[mayor]

My analysis indicates pages submitted back in March are included in the Ink index but none later.

Anyone see pages later than March getting into the Ink index without paying?

[roleli]

I have not... but I do see "the slurp" in my logs...

[stcrim]

INK is "cash and carry", period.

-s-

[Liane]

For pages that are already in the index (paid or unpaid) ... anyone know when they will update next?

[engine]

Slurp has been busy lately, although, trying to find the time taken to appear in the index has been tough to measure.
Depending upon dates of submission and update timescales, currently, i'm seeing around three months. Does anyone else have any timescales to substantiate this estimate?