qlikview 11 and qlik sense are two diffent product.
qlikview sense is focus on self service to users. where as qlikview 11 is more dependent on developers.
qlikview save as .qvw where as qlik sense saves as qvf files.
qliksense can only work on 64 bit machines where as qlikview can on both 32 and 64.
see more for qliksense documentation