The fall-out from smartphone price wars continues, with the pressure mounting on former leaders, now relegated to the second tier. BlackBerry may finally abandon its own platform and join the Android crowd with its next devices, according to reports. And although HTC has vehemently denied them, reports persist that the firm could be an acquisition target for PC maker Asustek. Reuters, citing anonymous sources, says an Android-powered BlackBerry is on the cards for this fall. It would offer touchscreen or pull-out keyboard options, and would be the logical culmination of years of moving from a closed ecosystem to a multivendor platform. Its mobility management and messaging systems still have loyal enterprise users and have been steadily opening up to support…