Background processing coming to Google AppEngine

It looks like Google is already some code with the Google AppEngine SDK that expose its future background processing support:

I just spotted this in the latest SDK release
so it looks like cron (among other things) is
just around the corner:
$ ls -la google/appengine/cron/
total 272
drwxr-xr-x 12 samj admin 408 17 Jan 12:18 .
drwxr-xr-x 11 samj admin 374 17 Jan 12:18 ..
-r--r--r-- 1 samj admin 27359 15 Jan 03:16 GrocLexer.py
-rw-r--r-- 1 samj admin 25813 17 Jan 12:18 GrocLexer.pyc
-r--r--r-- 1 samj admin 21071 15 Jan 03:16 GrocParser.py
-rw-r--r-- 1 samj admin 18377 17 Jan 12:18 GrocParser.pyc
-r-xr-xr-x 1 samj admin 646 15 Jan 03:16 __init__.py
-rw-r--r-- 1 samj admin 313 17 Jan 12:18 __init__.pyc
-r-xr-xr-x 1 samj admin 1909 15 Jan 03:16 groc.py
-rw-r--r-- 1 samj admin 3050 17 Jan 12:18 groc.pyc
-r-xr-xr-x 1 samj admin 7848 15 Jan 03:16
groctimespecification.py
-rw-r--r-- 1 samj admin 10029 17 Jan 12:18
groctimespecification.pyc
From the comments in the code, here's what you can expect:
A Groc schedule looks like '1st,2nd monday 9:00', or
'every 20 mins'. This module takes a parsed schedule
(produced by Antlr) and creates objects that
can produce times that match this schedule.
A parsed schedule is one of two types - an Interval,
and a Specific Time. See the class docstrings for more.

I think a lot of people have been waiting for this for a long time.