The news comes from Sunil Lalvani, managing director of BlackBerry India, who said on the subject:
Lalvani did say that the app would be released before the end of September, so it would be really cutting it close in terms of being released in "summer". Summer ends on September 21st, and it seems that BlackBerry is going to push that deadline to the limit on this.
You may also notice that Lalvani did not mention anything about the iOS app, but it is assumed that the iOS version will land at the same time as the Android app. Or, at least so far we haven't heard anything to the contrary.