PowerBuilder based systems run some of the world's most important organizations. Government departments, multi-national corporations, industry leaders and thousands of smaller organizations use PowerBuilder systems to process millions of transactions daily.
SAP acquired Sybase over three years ago. Powerbuilder was included in the basket of acquired technologies. There was a major release (12.5) done in August of 2011 while Sybase was still operating as a independant subsidiary. However, since Sybase was integrated fully into SAP in early 2012 the only significant action taken with regard to PowerBuilder has been the removal of the web deployment capability. PowerBuilder still hasn't been added to the SAP price books, it's not a topic covered at SAP TechEd and there is no clear roadmap or a release date for a future version.
If SAP doesn't find that the product fits with their core direction, please keep the best interests of your customers in mind and find another avenue of support for the product. SAP should spin it off as a separate entity and see if somebody picks it up (similar to what Borland did with Delphi), make the code available to one of the current partners so they can move forward with it, or release it to open source (similar to what Apache did with Flex).