It is reported by N4BB today that BlackBerry have denied that Google Play Store will be coming to BlackBerry 10:-

N4BB
There has been a tremendous amount of rumor swirling about that Google Play Store will arrive on BlackBerry 10. The rumor has it that BlackBerry 10.2.1 will usher in the support of Google Play Store to aid in giving BlackBerry 10 users access to a plethora of apps.

We’ve reached out to BlackBerry for comment on the matter and received this official statement:

“We can confirm that there is no planned support for Google Play on BlackBerry. BlackBerry World remains the primary source for trusted and curated BlackBerry applications and we continue to support open standards and open source tools so BlackBerry developers can continue to create apps on any of the development platforms we support.”