iGrann Pro for BlackBerry 10 has updated with video uploading support, the third party native Instagram client has jumped to version 2.8.8.1417 and is now available in BlackBerry World coming in at a price tag of $1.99.
For more information on previous iGrann releases see here, be sure to sign up on the BlackBerry Empire forum if you have not already.
Download iGrann Pro from BlackBerry World