I'm unaware of any developments.
I keep checking the release notes, but the last entries just read:

_{26/06/2009 - JMG v2.01a - Increased fatty resistance
20/04/2009 - JMG v2.00z - Fatapult enhancement complete}
( FoldsFive, Thu 2 Jul 2009, 12:22, archived)

I plan to upgrade my shouting and pointing in the next update.

( Jam Master Geordie Hero of B3ta., Thu 2 Jul 2009, 12:27, archived)

I for one look forward to JMG v2.01b.

( FoldsFive, Thu 2 Jul 2009, 12:31, archived)

I bet the b stands for bald.

( JessAction Give me all your expensive brandy and hubcaps., Thu 2 Jul 2009, 12:32, archived)