New low-end BB7 models aimed at emerging markets are on the way, says Thorsten Heins. With BB10 hardware carrying relatively steep price tags, BlackBerry's (BBRY) old and new operating systems will be "in coexistence for awhile" in some cost-sensitive regions. Heins adds his ideal BlackBerry lineup involves 6 phones - one touchscreen-only phone and one QWERTY model for 3 different price tiers. (earlier)