While we are waiting for Jio to announce its commercial launch, Jio has actually launched part of its services commercially. That's data services i.e. wireless broadband from Jio via WiFi hotspots has already been launched.
Though Jio has kept mum, almost 2 weeks back all Reliance Digital stores started selling MiFi devices with out any invitation, referral codes or anything. You walk into the store, pay
** Update: On 1st September Mukesh Ambani has removed the curtain over Jio. Jio services will be free to all customers till 31st December 2016. Post that you can use Jio prepaid or postpaid plans. The plans are coming with unlimited voice & text, plus data (with unlimited data in night and WiFi data to be used on JioNet public WiFi networks).
Once verified you will get a text from Jio on your mobile and then visit the store again to collect the SIM. This whole procedure takes 3-4 days generally, but it might take upto 10 days. In my case I got the text on 6th day. Note that you can't select a number - Jio will allot a no. to you.