Hi My name is Sanyam Goyal. I have recently finished my gsoc project "javascript overhaul of SMW"http://www.mediawiki.org/wiki/User:Sanyamgoyalunder the guidance of Yaron Koren. The project was successfully finished as planned. more information can be found on the status pagehttp://www.mediawiki.org/wiki/User:Sanyamgoyal/GSoC2010/Status .
Basic Summary is that lot of functionality like autocomplete , float-box, datepicker, combo-box etc in SMW and its spin-off extensions are re-implemented using the jQuery library , which is becoming a MW standard now . Also few new features like autocomplete in Special:Ask , jqPlot and jqPie in SRF , autoGrow textarea in SF, creating Special:CreateClass more dynamic, simpledatepicker in SFI etc. have been added as new functionality again using jQuery only.
I can understand if the wiki-pages looks less informative for now, But I will try to put more detailed wiki pages soon.
moreover if you have any questions about any functionality or anything in general, I will be glad to answer.
Thanks Hope you like the new features.