Boon*
And there has been interest, but nothing concrete. He always said to email/bother WB to let them know that a sequel is wanted. He has posted pics of the guide, mentioned that there were talks of an HD release on PS3/360, along other stuff like the canned sequel ad the canned PSP port.
There's also the fact that Netherrealm per se didn't worked on Shaolin Monks, So, if a sequel was made it would be by a different team..with input from Netherrealm (like the previous game been made by Paradox with input from the MK team at Midway).
At the moment, the only thing expected is that a Mortal Kombat game will be announced soon and that Keifer Sutherlands is involved on it.
It also seems that the OP should be updated, as there was no talk about a new game (which is expected) but a new comic (which as announced months ago).
Also keeping in mind that the original game started development as a pitch to show the fighting mechanic. It was then that it was turned into Mortal Kombat Shaolin Monks. So, as long as there's some stuff/knowledge about the previous engine and the handling of multi-directional combat; bigger /lush/detail locations, better looks in general and more content should be enough. Plus they could always hire/contract some of the ones lost through the years.