BlackBerry has stepped up once again, and has started to port Z10 apps that they deem eligible for bringing over to the Q10. Devs have the option to opt out of this service as well if they choose to port their apps themselves. Otherwise the process has begun. See more details in BlackBerry's email below:
Not ready yet? Let us know
If you don’t want us to automatically port your app over to BlackBerry Q10 right now, please let us know by filling out the Opt Out form. You must opt out by June 10, 2013 or your app will be automatically ported. Opt out
BlackBerry World Team
Let us know in the comments if one of your apps are going to be ported to the Q10 by BlackBerry!