As noted on his blog, Alex King has released an updated version of Tasks Pro (1.0 now). He has worked very hard on this project and it really is a gem! Tasks management on the web does not have to be bloatware and this set of scripts proves just that.
Some of the features of 1.0 include multiuser functionality and a list of changes from previous versions can be found here. You can demo Tasks Pro 1.0 here and read more about it here.
Good job Alex (as always) !